Chorus Forms & Tempo

The faster the tempo of the backing (swing for example), the more repetitive Chorus Forms you'll use, AAA and AAB for example (listen to William Clarke's "Blowin' the Family Jewels," it's all AAA and AAB). The slower the backing, the more active Chorus Forms you'll use (listen to Little Walter's "Blue Midnight," the A B/A C Chorus Form is king in slow blues). So, the general guideline you can give yourself is that if the backing is active, you don't need to be. If the backing is slow and sparse, up your activity. As you can infer, it's about balance.