Music

Rodrigo y Gabriela. It's hard to believe that it's been 11 years since album-buying audiences first got a taste of Mexico's Rodrigo y Gabriela — or Rod y Gab as they're affectionately known — when the duo's Foc was released. Now, they offer their first-ever run at Cuban arrangements on the new Area 52. "We have to just play what we like and break all the rules, ours and everyone else's," Quintero says. "We do metal. We can shift to "Take Five" and jazz. It's all a fusion in every sense of the word, what we do. Personally, though, we would like to think that there is alien life out there."

— A.D. Amorosi

With C.U.B.A. and Brett Dennen performing at 8 p.m. Saturday at the Tower Theater, 69th and Ludlow Streets. Tickets: $49.50, $45, $35. Information: 800-745-3000, www.LiveNation.com.

Family

Second Annual Philadelphia Science Festival. Carnival goers on Satruday at Logan Circle can do cool things such as eat nitrogen ice cream or learn how to test a crime scene for forensic evidence or extract DNA from a strawberry.

— Monica Peters

11 a.m. to 4 p.m. Saturday at Logan Circle, the Franklin Institute, and the Central Library, the Parkway between 19th and 20th Sts. Admission is free. Information: www.philasciencefestival.org.

Film

New this week: Marley (sssd) A beautiful if sometimes jumbled documentary about the reggae superstar Bob Marley, from his childhood in the slums of Kingston, Jamaica, to his enduring influence in pop music, even 30 years after his death. PG-13 (drugs, violence, adult themes). Playing at: Ritz at the Bourse.

— Steven Rea.