Make your first loop in Chrome Music Lab Song Maker

You can make a short melody in Chrome Music Lab Song Maker without creating an account. Click squares in the grid to place notes: left to right sets their timing, and higher rows set higher pitches. You don’t need to type sheet music.

Set up two bars

Open Settings and change Length to 2 bars, then select the checkmark. Leave the other starting settings as they are: 4 beats per bar, each beat split into 2, Major scale, Middle C, and a 2-octave range. That gives you 16 columns, 8 per bar.

Place four notes

Count columns from the left and melody rows upward from the bottom, starting at 1. Skip the two percussion-dot rows below the melody grid. Click these four squares:

• Column 1, row 1: C
• Column 5, row 3: E
• Column 9, row 5: G
• Column 13, row 3: E

The first bar contains C and E; the second contains G and E. Each note starts four columns, or two beats, after the previous one. Empty columns leave time between notes.

Keep Marimba and the starting tempo of 120 for this example. The original placement recipe has the settings and squares in a plain-text file; enter them manually in Song Maker.

Select Play to run the pattern. The button changes to Stop. Select Stop to end playback and restore Play. To try a different ending, select Undo to remove the last E, then click column 13, row 1 to put C at that time. Undo removed the final E in the recorded trial; the C ending is a variation for you to try.

The official experiment page describes making and sharing songs. Song Maker’s About panel explains that Save gives you a share link. The grid recipe above is an original practice example; no share link was created during the check.

Source and scope: Chrome Music Lab and Song Maker’s instructions were checked October 16, 2026. The settings, four note placements, Play/Stop, and Undo were checked in headless Windows Chrome 155.0.8059.40; audio, sharing, and other devices were not tested.