DJ Rusko will perform at Jiffy Lube Live on Aug. 18. (Windish Agency)

Tickets go on sale Friday at 10 a.m. through LiveNation for Lil Wayne, Rick Ross, Keri Hilson, Far East Movement and Lloyd July 16 at Jiffy Lube Live ($35.75-$105.75).

Tickets go on sale Friday at 10 a.m. through Ticketfly for the following shows at Merriweather Post Pavilion:
Return to Forever and Zappa Plays Zappa Aug. 9 ($40-$125).
HFStival 2011 featuring the Avett Brothers, Flogging Molly, Dr. Dog, Clutch and more Sept. 17 ($35-$50).
Ray LaMontagne and the Pariah Dogs and Brandi Carlile Sept. 29 ($40-$55).

Tickets go on sale Friday at noon through Ticketmaster for the following shows at the Birchmere:
Simon &Garfunkel Retrospective performed by A.J. Swearingen & Jonathan Beedle July 8 ($22.50).
Julia Fordham & Paul Reiser July 25 ($35).
Joan Osborne Aug. 3 ($35).
Justin Townes Earle and Shovels & Rope Aug. 20 ($25).
Raul Malo Band Aug. 22 ($29.50).
Hiroshima Sept. 23 ($45).
Melissa Ferrick Sept. 24 ($25).
Bonnie Prince Billy Oct. 2 ($25).
David Cassidy Oct. 30 ($49.50).