Optimus plays the full birthday tune for you — sit back, sing along if you want.
bot concert · 120 BPM
80 BPM
Gap: 4 beats
practice rounds: 2
press play
● melody = RIGHT hand, circled number = finger (1 thumb · 2 index · 3 middle · 4 ring · 5 pinky)
· ● drone = LEFT hand: pinky 5 on C3 + thumb 1 on G3, held together
Roboplay: full song once at 120 BPM, 0-beat gap between lines. Left hand keeps a soft C–E–G ostinato under the melody. Switch to Learn to practice.Optimus-style right hand tracks the keys — glowing fingertip is the one that presses.
Left hand holds the drone on C3 + G3 (pinky + thumb). Re-strike once per line.
Every line = 4 beats: syllables on 1 & 2 & …, hold the last one, then the gap beats are yours to breathe.