Day 26: ABA Form and the Tonic Note
Monday, April 27th, 2026
Work Session
Key Vocabulary
- Tonic note
- The “home” note of a scale — the note the melody feels like it wants to return to. In C major, the tonic is C.
- ABA form
- A three-part structure: the A section states the main idea, the B section introduces a contrasting idea, and the final A section brings back the original idea. Think verse–bridge–verse.
What You’ll Compose
You will write a short original melody in C major using ABA form in MuseScore. Your melody will be 12 measures total:
| Section | Measures | Goal |
|---|---|---|
| A | 1–4 | Main melodic idea; end on or near C (the tonic) |
| B | 5–8 | Contrasting idea; use different notes or a different rhythm. End on a note other than C to create contrast. |
| A | 9–12 | Return to your original idea from measures 1–4 |
Setting Up Your MuseScore File
You’ll use the worksheet I provided in the warmup. So, there’s nothing to setup!
Composing Your Melody
- Use notes from the C major scale: C D E F G A B C
- Start and end your A sections on C to reinforce the tonic.
- For your B section, try starting on a different note (G?) and changing the rhythm.
- Use the Play button frequently to hear what you’ve written and adjust anything that doesn’t sound right.
- Use one note per beat only!
Tips
- A melody doesn’t have to be complicated to be good — simple and memorable is good!
- Your A section and your return-A section don’t have to be identical, but they should sound related.
Checkpoint: Work Session
- I have written an A section (mm. 1–4) that feels like it ends near home (C).
- I have written a contrasting B section (mm. 5–8).
- I have written the return A section (mm. 9–12).
- I played it back and made corrections.
- I saved and submitted my file to the CTLS Discussion Post with a sentence describing a choice I made.
Closing
Go to the Discussion Post in CTLS and upload your completed MuseScore file (.mscz) as an attachment. In your post, include a sentence or two describing a choice you made:
- Which note did you start your B section on, and why?
- What did you do to make your B section feel different from your A section?
Then listen to at least three of your classmates’ melodies and reply to their posts using these sentence stems:
- “Your B section stood out to me because…”
- “One thing I’d suggest trying is…”
“Nice job!” is not enough — tell them what you heard and why it worked or didn’t.
Standards
- MSMTC8.CR.1 — Generate musical ideas for various purposes and contexts (composing an original ABA-form melody in C major using MuseScore).
- MSMTC8.CR.2 — Select and develop musical ideas for defined purposes and contexts (structuring melodic ideas into A and B sections with intentional contrast).
- MSMTC8.CR.3 — Evaluate and refine selected musical ideas to create musical work that meets appropriate criteria (using peer feedback and playback to revise the melody).
Last updated on