Modal jazz abandoned chord progressions to allow musicians to improvise even more. Swing bands usually featured soloists who would improvise on the melody over the arrangement. Jazz bass players improvise a bassline from a chord chart. The keyboard player would improvise a chord voicing for each bass note. He will sometimes improvise on a rhythmic pattern instead of on the melody or changes. Skilled musicians can often improvise variations on a theme. In small groups, the rhythm section members typically improvise their accompaniment parts. During the Classical era, some virtuoso soloists would improvise the cadenza sections of a concerto. They would also routinely improvise together. Members could then easily improvise with these samples and manipulate them using sound effect racks. I improvise like I would when I play music. Egyptian pilots were rigid, slow to react and unwilling to improvise. Normally workshops are used to allow actors to improvise their own material. In blues- or jazz-influenced pop songs, the solo performers may improvise a solo. Doane allowed the musicians to improvise during the shoot.