Four-time grammy nominee, Plena Libre performs on the Santa Monica Pier during the twilight dance series on Thursday, July 12, 2007 Plena Libre - an Afro-Rican 13-member band is one of the hottest tropical bands today, known for their high-energy show and hard-driven native Puerto Rican folkloric rhythms plena and bomba, which are infused with salsa, jazz, other Afro-Caribbean rhythms, and topped with sizzling horn charts. Plena Libre presents an entertaining, dynamic and culturally infused program.