The cast of the Broadway national tour of West Side Story, onstage through this weekend at Fair Park, will take their night off to perform at Amy Stevenson’s cabaret fundraiser Mama’s Party on tonight. The event raises money for Broadway Cares/Equity Fights AIDS, which provides funds to our local agencies. The evening, featuring local musicians as well as cast members singing some of their favorite songs, will be ar Tucker’s Blues, 2617 Commerce St. Doors open at 7 p.m. with an cover charge of $5 (cash only). There will be prizes for raffle tickets and some auction items as well.