KINGS OF LEON come rocking back with the electric "Radioactive," from the band's fifth studio set, Come Around Sundown, due Oct. 19. $0.99 at amazon.com.

MICHELLE BRANCH tackles life's ups and downs on "Crazy Ride," an acoustic-guitar-laced ballad from her EP Everything Comes and Goes. $1.29 at napster.com.

GOOD CHARLOTTE cranks up the punk-pop fun on "Like It's Her Birthday," from Cardiology, due Nov. 2. $1.29 at rhapsody.com.

KERI HILSON plays the fed-up woman on "Breaking Point," a Timbaland production from this fall's No Boys Allowed. $1.29 at zune.net.