# Improvisation help

If you study improvisation, JJazzLab proposes a few useful exercices from Hal Crook's book "How to improvise".

JJazzLab will generate a "guide" to help you perform the selected exercise on the active song.

![The Play/Rest exercise applied on the active song](https://1057949908-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MQE7B7yjVY3xzlsorS4-887967055%2Fuploads%2FZb5uKmLQuLaEkglQ58BV%2F2021-12-13%2020_37_36-JJazzLab.png?alt=media\&token=5e3f3f2d-b2ff-4687-9d1b-5b9ccd3119c0)