from Amazing Phrases
One of the most popular tactics used in blues soloing is call-and-response phrasing. Quite literally a conversational device, the call and response can be used to great effect in drawing in listeners as they anticipate how your musical conversation will play itself out.

Similar to the traditional blues lyrics format, call-and-response phrasing usually comes in groups of three consecutive phrases: introductory phrase, an exact or close repeat of the introductory phrase, and a resolving phrase.

This solo uses call-and-response techniques to navigate two choruses of a 12-bar blues in A. In the first chorus each call/response/conclusion spans four measures, making a total of three sets of call-and-response phrases. The second chorus, however, takes a different approach by extending the phrasing, resulting in one long call/response/conclusion section.

Listen to the audio example