Generate Music Loops at Your Tempo and Key

Loops made to order

Producers build tracks from loops, and the bottleneck is usually finding one at the right speed and in the right key. This page generates the loop instead: describe it in words, give it a tempo and a key, and the Sounds mode of Suno writes a short piece of audio meant to be repeated.

That makes it a quick source of raw material. Generate a drum pattern, a chord progression and a bassline separately, then arrange them in your DAW the way you would with sample packs.

Tempo, key and the loop switch

Three controls shape the result. Tempo takes any whole number from 1 to 300 BPM. Key offers every major and minor key, plus automatic. The seamless loop switch asks the model for a clip whose end returns to its beginning. The preset opens at 120 BPM, A minor and loop on, a neutral starting point you can change in a click.

These are targets given to the model rather than guarantees. If a session depends on exact values, confirm them afterwards with the key and BPM finder.

Prompting for producers

Name the role first, then the sound. A dusty boom bap drum loop with vinyl crackle tells the model more than a nice beat. Keep each prompt to one layer, because a loop with drums, chords and bass baked together is harder to rearrange than three separate loops. Mention what to leave out, such as no vocals or no melody, when you want a clean bed.

Genre words, instrument names and texture words such as warm, tape or lo-fi all steer the output. Prompts can run to 500 characters.

Getting a loop you can use

The length of the output is whatever the model returns, and looping is not guaranteed to be sample-accurate. Plan on a short cleanup: open the result in the audio trimmer, cut it on a bar line, and play it on repeat to hear the join. If it clicks, a short crossfade or a different cut point usually fixes it. To pull a drum pattern out of a fuller result, run it through the stem splitter.