Do you still believe in a thing called love? The Darkness does. After the codpiece-rock throwback last album "One Way Ticket to Hell ... and Back" flopped, they've returned re-energized with a new round of '70s- and '80s-indebted riffage in preparation for a third record. House of Blues, 8430 W. Sunset Blvd., West Hollywood. 7:30 p.m. Sun. hob.com.