Free pitch practice tool

Play Happy Birthday in Blob Opera

Hear the melody one phrase at a time, tap any note to learn the shape, then move it into Blob Opera. No sheet music or keyboard skills required.

Melody practice

Key Speed

Start with two repeated notes, step up, then make the first larger jump.

Choose a phrase or tap a note to begin.

This practice tool uses synthesized reference tones. It does not control or embed the official Blob Opera experiment.

Move the melody into Blob Opera

1. Lead with soprano

Use the highest blob for the tune. Match the direction of each pitch first; exact notes matter less than keeping the contour recognizable.

2. Add a bass drone

Hold the lowest blob near a comfortable note. Keep it steady while the soprano moves so the melody stays clear.

3. Save harmony for last

Bring in tenor and mezzo-soprano on the final phrase. A late entrance sounds fuller without making the opening difficult to control.

Relative pitch guide

The number pattern works in every key. A number with an upward arrow means the note is in the next octave. Use the key selector above when one range feels more comfortable.

Phrase	Scale degrees	What to listen for
Opening	5 5 6 5 1↑ 7	Repeat, step up, return, jump.
Repeat	5 5 6 5 2↑ 1↑	Same start, slightly higher landing.
High point	5 5 5↑ 3↑ 1↑ 7 6	The widest jump of the melody.
Finale	4↑ 4↑ 3↑ 1↑ 2↑ 1↑	Descending finish back to home.