S.O.A. had corresponded with Black Flag, and met them when they performed on the U.S. east coast. At an impromptu show at A7 in New York City, Rollins had asked the band to perform "Clocked In", and the band offered to let him sing, Rollins performed the song "Annihilate This Week" with the band. Since vocalist Dez Cadena was switching to guitar, the band then invited Rollins to audition. Impressed by his stage demeanor, they asked him to become their permanent vocalist. Despite some doubts, he accepted, due in part to Ian MacKaye's encouragement. Rollins acted as roadie for the remainder of the tour while learning Black Flag's songs during sound checks and encores, while Cadena crafted guitar parts that meshed with Ginn's. Rollins also impressed Black Flag with his broad musical interests during an era when punk rock music and fans were increasingly factionalized; he introduced Black Flag to Washington D.C.'s go-go, a distinctive take on funk music.