Rehearsals for the tour began in March 2007 and the performances featured music performed by an all-female band called Suga Mama chosen by Beyoncé Knowles and her father Mathew Knowles during auditions held before the release of "B'Day". The set list of the concerts included songs from "B'Day", "Dangerously in Love", ten shortened versions of Destiny's Child's songs as well as "Listen", originally recorded by Knowles for the of "Dreamgirls" (2006). Ten instrumentalists, three harmony vocalists and ten dancers backed Knowles onstage which also had disco balls hanging from the ceilings and color-changing stairs. For the wardrobe of the tour, Knowles collaborated with several designers; it consisted of silvery and sparkly dresses which received praise from critics.