6.5. Force a Loop to Keep Its Original Tempo

Normally when you drag a loop into the timeline, GarageBand automatically converts it to the tempo of the song you’re working on. There may be times, however, when you don’t want GarageBand to do this—usually for something that has no real tempo, like a sound effect, but possibly also to create a special effect such as a weird synth drone playing oddly in the background, or a stuttering drum part to accent an important moment in a song.

This is an easy effect to achieve: