Two artists hailing from different sides of the Atlantic but both bound by the spirit of social justice and activism come together for a special celebration of music. Mavis Staples blazes a rhythm & blues trail while never relinquishing her gospel roots. The Lifetime Grammy Award winner and Rock and Roll Hall of Fame inductee was honored as one of Rolling Stone’s 100 Greatest Singers of all time. Billy Bragg’s inspiration stems from the socially conscious folk tradition of Woody Guthrie and Bob Dylan. He’s spent more than two decades making an indelible mark on the conscience of music with celebrated solo records and two Grammy-nominated albums with Wilco—Mermaid Avenue (1998) and Mermaid Avenue, Volume II (2000). UCLA Live at Royce Hall, 340 Royce Drive, Westwood. Fri., Nov. 5, 8 p.m. $33-58 ($15 for UCLA students) (310) 825-2101, www.uclalive.org.