Lesson Notes By Weeks and Term v3 - Senior Secondary 1
Computer music
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Computer music
Download the Lessonotes Mobile Nigeria 2025 app for faster lesson access on Android and iPhone.
Subject: Music
Class: Senior Secondary 1
Term: 3rd Term
Week: 3
Theme: Introduction To Music Technology (Africa Musical Instruments) Iii
This page supports the lesson note with a companion video and a short classroom-ready summary.
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Students should be able to identify a' programmed music as distinct from live- performance. observe the use of a digital keyboard in programming music
received by a Digital Audio Workstation (DAW) software on the computer. Within the DAW, a virtual instrument (a software synthesizer or sampler) interprets this MIDI data and generates the actual sound. So, the keyboard plays the virtual instrument. 2.
4. Digital Audio Workstation (DAW) A DAW is a software application used for recording, editing, mixing, and mastering audio and MIDI. Popular DAWs include FL Studio, Ableton Live, Logic Pro (Mac only), Cubase, Pro Tools, and GarageBand. It is the central hub for computer music production. 2.
5. MIDI (Musical Instrument Digital Interface) MIDI is a technical standard that enables electronic musical instruments, computers, and other related devices to connect and communicate with one another.
It's NOT Audio: It's important to understand that MIDI transmits data about music (what note, how loud, when to start/stop) – it does not transmit actual sound waves.
The Language of Music Machines: Think of MIDI as the "language" that digital keyboards and DAWs use to talk to each other.
Flexibility: Because MIDI is data, it can be easily edited. You can change the pitch of a note, its duration, the instrument playing it, or even its timing without re-recording the original performance. 2.
6. Steps in Programming a Piece of Music using a Digital Keyboard: This process typically occurs within a DAW:
1. Hardware Setup: Connect the digital keyboard to the computer using a USB cable (most common) or a MIDI interface. Ensure the computer recognizes the keyboard (drivers may be needed).
2. Software Setup (DAW): Open the Digital Audio Workstation (e.g., FL Studio, Cubase). Configure the DAW to recognize the connected digital keyboard as a MIDI input device. Create a new project or song.
3. Select a Virtual Instrument: Load a virtual instrument (e.g., a software synthesizer, a drum machine, a sampled piano) into a track within the DA
W. This virtual instrument will produce the actual sound.
4. Record MIDI Data: Engage the record function in the DAW. Play the desired musical part (melody, harmony, rhythm) on the digital keyboard. As the student plays, the DAW records the MIDI data (note on/off, velocity, etc.) onto the track. Alternatively, if a keyboard is unavailable or for fine-tuning, notes can be drawn directly into the DAW's "piano roll" editor using a mouse.
5. Edit and Quantize MIDI: Quantization: This process automatically corrects any timing inaccuracies in the recorded performance, snapping notes to the nearest beat or subdivision (e.g., if a note was played slightly off-beat, quantization moves it precisely onto the beat). This is crucial for achieving a tight, professional sound.
Editing: Adjust individual notes (pitch, duration, velocity), add or remove notes, modify expression using MIDI controllers (e.g., pitch bend, modulation).
6. Layering and Arranging: Repeat steps 3-5 to record different musical parts (e.g., drums, bassline, chords, lead melody) on separate tracks, layering them to build up the entire song. Arrange these parts into a full song structure (intro, verse, chorus, bridge, outro).
7. Mixing: Adjust the volume levels, panning (left-right positioning in the stereo field), and apply effects (reverb, delay, equalization, compression) to each track to create a balanced and clear sound.
8. Mastering (Optional, often a separate step): The final stage of polishing the overall sound of the completed song, ensuring it sounds professional and ready for distribution across different playback systems.
9. Export: * Export the finished project as an audio file (e.g., WAV, MP3) which can then be shared or played back like any other song. --- This section provides a detailed explanation of the core concepts related to computer music. 2.
1. What is Computer Music? Computer music refers to any music that is created, manipulated, or performed using computer hardware and software. It involves the use of digital tools to compose, arrange, record, mix, and master musical pieces. This allows for immense flexibility, precision, and the creation of sounds and textures that might be difficult or impossible to achieve with traditional acoustic instruments alone. 2.
2. Programmed Music vs. Live Performance Music Live Performance Music: Definition: Music played by human musicians on acoustic or electronic instruments in real-time before an audience.
Characteristics: Human Element: Features improvisation, spontaneous interaction between musicians, and nuanced expressive qualities.
Unpredictability: May have slight variations in timing, dynamics, and pitch due to human interpretation and momentary errors, which often contribute to its organic feel.
Physical Presence: Requires musicians and instruments to be physically present.
Audience Interaction: Often involves direct engagement and response from the audience.
Example in Nigeria: A live band performing at a wedding, a traditional ensemble playing at a cultural festival, a choir singing in a church service with live instrumentalists.
Programmed Music: Definition: Music created by inputting musical data (notes, rhythms, dynamics, instrument choices) into a computer using specialized software. The computer then interprets and plays back this data.
Characteristics: Precision and Control: Allows for exact timing, pitch, and dynamics. Every parameter can be meticulously controlled and edited.
Virtual Instruments: Utilizes software-based instruments (synthesizers, samplers) that can emulate a vast range of sounds, from orchestral instruments to electronic textures, without needing physical instruments.
Repetitive Consistency: Can reproduce a performance identically multiple times, ensuring consistency.
Scalability: A single individual can compose and produce complex arrangements that would otherwise require many musicians.
Editing Flexibility: Easy to revise, rearrange, and experiment with different musical ideas without re-recording.
Example in Nigeria: The instrumental backing track for many popular Afrobeats songs (e.g., beats by Sarz, Young Jonn), jingles for MTN or Glo commercials, film scores for Nollywood movies where virtual orchestras are used. 2.
3. The Digital Keyboard and its Role A digital keyboard (often referred to as a MIDI keyboard, MIDI controller, or synthesizer workstation) is a crucial piece of hardware in computer music production.
Digital Keyboard Types: MIDI Controller: This is a keyboard that does not produce sound on its own. Its primary function is to send MIDI (Musical Instrument Digital Interface) data to a computer or other MIDI-compatible devices.
Synthesizer Workstation: A digital keyboard that generates its own sounds and can often also function as a MIDI controller. It typically includes a sequencer, allowing for direct programming of music without a computer, though it can still connect to one.
Digital Piano: Primarily designed to emulate acoustic pianos but often includes MIDI capabilities for connecting to a computer.
Role in Programming Music:
1. Input Device: The digital keyboard acts as the primary input device for musical data. When a key is pressed, it doesn't send an audio signal directly; instead, it sends MIDI messages to the connected computer.
2. MIDI Data Transmission: These MIDI messages include information such as: Note On/Off: Which key was pressed and released.
Velocity: How hard or soft the key was pressed (determining dynamics/loudness).
Pitch Bend: Bending the pitch of a note using a wheel.
Modulation: Adding vibrato or other effects using a modulation wheel. * Pedal Information: Sustain pedal data.
3. Controlling Virtual Instruments: The MIDI data sent from the digital keyboard is received by a Digital Audio Workstation (DAW) software on the computer. Within the DAW, a virtual instrument (a software synthesizer or sampler) interprets this MIDI data and generates the actual sound. So, the keyboard plays the virtual instrument. 2.
4. Digital Audio Workstation (DAW) A DAW is a software application used for recording, editing, mixing, and mastering audio and MIDI. Popular DAWs include FL Studio, Ableton Live, Logic Pro (Mac only), Cubase, Pro Tools, and GarageBand. It is the central hub for computer music production. 2.
5. MIDI (Musical Instrument Digital Interface) MIDI is Carefully observe the teacher's demonstration of the digital keyboard and DAW, or analyze the provided pictures/videos. Discuss with peers what they are seeing and how the keyboard interacts with the computer.
4. Discussion and Brainstorming (During Step-by-Step Explanation): Participate in a class discussion about the steps in programming music. Contribute ideas on why each step is important.
5. Group Work & Presentation (During Activity Facilitation): Collaborate with group members to identify differences between live and programmed music in a specific Nigerian context. * Appoint a group representative to share their findings with the class. --- This section outlines the pedagogical steps for delivering the lesson, focusing on practical engagement within a Nigerian classroom.
Teacher Activities:
1. Introduction & Hook (10 mins): Play two audio examples: Example 1: A snippet of a complex programmed Nigerian popular song (e.g., an Afrobeats instrumental beat by a renowned producer like Sarz or Pheelz).
Example 2: A snippet of a live band performing a similar genre of Nigerian music (e.g., a highlife band, a live gospel band). Engage students by asking them to identify differences in sound quality, precision, and the "feel" of the music without revealing the method of production yet.
Introduce the topic: "Today, we will explore 'Computer Music' and understand how technology is shaping the music we hear every day, distinguishing it from live performances."
2. Concept Explanation (15 mins): Systematically explain "What is Computer Music?" and clearly differentiate between "programmed music" and "live performance music" using the examples played earlier. Use relatable Nigerian examples for both types of music. Introduce and define the concept of a "digital keyboard." Display a physical digital keyboard if available, or clear pictures/posters of various types (MIDI controller, synthesizer workstation, digital piano). Explain the role of the digital keyboard as an input device for computers and its connection via MIDI.
3. Demonstration/Visualisation of Digital Keyboard Use (20 mins): If a digital keyboard and computer with DAW are available: Demonstrate connecting the digital keyboard to the computer. Open a simple DAW (e.g., GarageBand, a basic version of FL Studio, or even an online MIDI sequencer). Show how to select a virtual instrument. Play a simple melody on the digital keyboard while recording, showing how MIDI notes appear in the DAW's piano roll.
Demonstrate basic editing: quantizing a slightly off-timed note, changing the pitch of a note, altering its velocity. Play back the recorded and edited segment. If no digital keyboard/computer is available: Use large, clear pictures or video clips (if projector/screen available) showing: A digital keyboard connected to a computer running a DAW. Screenshots/videos of a DAW interface, specifically focusing on the "piano roll" view where MIDI notes are displayed. Explain the process step-by-step using these visuals, narrating what happens when a key is pressed and how the computer records and interprets it. Emphasize that the keyboard is sending data, not sound, to the computer.
4. Step-by-Step Programming Explanation (15 mins): Guide students through the outlined steps for programming a piece of music using a digital keyboard and DAW. Use a flow chart or numbered list on the board for clarity. Reinforce the role of MIDI in this process. Discuss how Nigerian producers like Don Jazzy or Sarz might use these steps to create their beats.
5. Activity Facilitation (10 mins): Divide students into small groups (3-4 students).
Provide each group with a task: "Brainstorm and list three differences between a live performance of a praise & worship song and a programmed backing track for the same song used in a church." Circulate among groups, providing clarification and facilitating discussion.
Student Activities:
1. Active Listening & Observation (During Introduction): Listen attentively to the provided audio examples (programmed vs. live music). Identify and verbalize initial differences observed in the two musical excerpts.
2. Note-Taking & Questioning (During Concept Explanation): Take notes on definitions of computer music, programmed music, live performance music, digital keyboard, and MIDI. Ask clarifying questions about the definitions and examples.
3. Observation & Discussion (During Demonstration/Visualisation): Carefully observe the teacher's demonstration of the digital keyboard and DAW, or analyze the provided pictures/videos. Discuss with peers what they are seeing and how the keyboard interacts with the computer.
4. Discussion and Brainstorming (During Step-by-Step Explanation): Participate in a class discussion about the steps in programming music. Contribute ideas on why each step is important.
5. Group Work & Presentation (During Activity Facilitation): Collaborate with group members to identify differences between live and programmed music in a specific Nigerian context. * Appoint a group representative to
This topic has strong relevance to various aspects of Nigerian life and industries. Nigerian Music Industry (Afrobeats, Gospel, Film Scores): Application: The knowledge of computer music directly explains how the vast majority of contemporary Nigerian popular music (Afrobeats, Hip-Hop, R&B), Gospel music, and film soundtracks are produced. Students can relate this to the music they listen to daily. Producers like Don Jazzy, Sarz, Pheelz, Young Jonn heavily rely on DAWs and digital keyboards to create the instrumentals that back popular Nigerian artists. Understanding this process provides insight into the creative and technical backbone of Nigeria's booming music industry, which contributes significantly to the national economy and cultural identity.
Local Context: Many upcoming Nigerian artists and producers, even in remote areas, are starting their careers with just a laptop, a small digital keyboard, and a DAW. This democratizes music creation, making it accessible to more young Nigerians without needing expensive studio equipment or a full band. Media, Advertising, and Broadcasting: Application: Programmed music is indispensable in the Nigerian advertising and broadcasting sectors. Jingles for prominent Nigerian brands (e.g., telecommunication companies like MTN, food brands like Indomie, or financial institutions), background music for news broadcasts, documentaries, and TV series (e.g., on Channels TV, Africa Magic) are almost exclusively created using computer music techniques.
Local Context: This topic helps students understand the behind-the-scenes creation of the soundscapes that accompany their daily media consumption, showing them practical applications of music technology beyond just recording songs. It highlights potential career paths in sound design for media houses and advertising agencies in cities like Lagos, Abuja, and Port Harcourt.
Worship and Religious Music: Application: Many churches and ministries in Nigeria utilize programmed backing tracks for their worship services, particularly smaller denominations or during weekdays when a full band is unavailable. Digital keyboards are often used to layer multiple instrument sounds (strings, brass, pads) simultaneously, creating a richer sound with fewer musicians.
Local Context: Students who are active in church music can immediately see the practical utility of digital keyboards and programmed music in enhancing worship experiences, providing accompaniment where live musicians might be scarce, and creating arrangements for choirs. ---