: The pastor who gives the brothers their "epiphany" at the Triple Rock Baptist Church.

: The lead singer just paroled from Joliet Correctional Center.

Much of the film was shot on location in Chicago, which effectively became a character itself.

: The soul food restaurant owner who sings "Think" to her husband, band member Matt "Guitar" Murphy.

: Jake's brother and harmonica player.

: Located at 1125 Collins Street, Joliet; used for the opening scene where Jake is released.

: The blind owner of Ray's Music Exchange who performs "Shake a Tail Feather".