Day 20: Finish Your Beat
Friday, April 17th, 2026
Work Session: Part 1 — Review
Open the GarageBand project you started on Thursday. You should already have two tracks recorded and quantized:
- Track 1 — Kick drum (C1): Quarter notes on every beat (1, 2, 3, 4).
- Track 2 — Snare drum (D1): On beats 2 and 4 — the “backbeat.”
Press spacebar and listen. If either track still sounds off, re-quantize using 1/4 Note before moving on.
You can also re-record notes using Musical Typing (Command + K).
We will set up the MIDI controllers in a minute. Like yesterday, you will need to take turns using musical typing and the MIDI controller.
Work Session: Part 2 — Add the Hi-Hat
What is a Hi-Hat?
The closed hi-hat is the steady pulse that sits on top of a beat — it’s the “ch-ch-ch-ch” sound you hear in almost every style of popular music. In a four-on-the-floor pattern, the hi-hat plays straight eighth notes: every half-beat, counted “1 & 2 & 3 & 4 &.”
MIDI Note
The closed hi-hat is mapped to F#1. See the MIDI Mappings page if you need a reminder.
Steps
- Add a new Software Instrument track (click the + button, choose Software Instrument).
- Open Musical Typing (Command + K) or use the MIDI controller.
- Shift down to octave 1 if needed (Z in Musical Typing).
- Press record and play F#1 as a steady eighth-note pulse — “1 & 2 & 3 & 4 &” — for four full measures.
- Listen back. It should feel like a steady tick layered over the kick and snare.
Quantize the Hi-Hat
Because hi-hats are eighth notes, use a 1/8 Note grid — not 1/4. Using 1/4 would collapse your eighth notes onto the beat and erase half of them.
- Select the hi-hat region.
- Open the Piano Roll (E).
- Set Time Quantize to 1/8 Note.
- Listen back — the hi-hats should lock into an even pulse.
Work Session: Part 3 — Your Choice Sound
Now add a fourth track with any drum or cymbal you want. This is your chance to give the beat some personality.
Options
| Sound | MIDI Note |
|---|---|
| Crash cymbal | C#2 |
| Ride cymbal | Eb2 |
| Open hi-hat | Bb1 |
| Low tom | G1 |
| Mid tom | A1 |
| High tom | B1 |
Steps
- Add another new Software Instrument track.
- Pick a note from the table above and decide on a simple repeating pattern — for example, a crash on beat 1 of every measure, or a ride on every quarter note.
- Record your pattern for four measures.
- Quantize: choose 1/4 Note or 1/8 Note depending on what you played.
Listen to the Full Beat
With all four tracks playing, listen to your complete four-on-the-floor beat. Adjust volumes if one sound is drowning out the others (drag the volume knob on each track).
Closing
Think about these questions — you may be called on to share your answer out loud.
- Your beat has four tracks. Name each one and the MIDI note it uses.
- Why did the hi-hat use a 1/8 Note quantize grid instead of 1/4 Note? What would have happened if you had used 1/4?
- What sound did you pick for track four, and why? What does it add to the beat?
Standards
- MSMTC8.CR.1 — Generate musical ideas for various purposes and contexts (completing a four-on-the-floor beat by adding hi-hat and a choice sound).
- MSMTC8.CR.2 — Select and develop musical ideas for defined purposes and contexts (choosing appropriate quantization grid values for each track).