Harmonics Music Box logo

Card Stamp

Type a card number (1–48) and we'll punch its notes onto the strip. Chain cards with commas, e.g. 1, 4, 7.

Quick pick:

New to the Music Box?

Learn how to punch notes, stamp cards, and play back your melody.

How Does It Work?

Compose Your Melody

Song Title
Our little melody…
Composed By
Your name
Date
—
A
G
F
E
D
C
B
A
G
F
E
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

Click the strip to punch a note · drag a note to move it · right-click to duplicate · shift+right-click (or double-click) to delete. Snap: On locks new notes and drags to the eighth-note beat grid — great for staying in time. Snap: Off lets you place notes anywhere for semiquavers and unusual rhythms. Toggling never moves notes you've already placed. Song details are saved through the Song Info panel below.

Built-in songs

Tap a song to load and play instantly with its recommended instrument.

Song Info

This is your song's official record. Click Save Song to store the whole composition.

AI Song Composer

Coming soon — generate melodies with AI.

Will release in the future

Saved Songs

0 songs

No saved songs yet. Fill in the Song Info panel and click Save Song.