The stage version of “Mamma Mia!” is running through Sunday at Bass Performance Hall in Fort Worth, but you don’t have to head over to Cowtown to get a taste. Tonight — Thursday, Sept. 11 — the cast is performing a cabaret show to benefit the Starlight Children’s Foundation. The late-night performance takes place at the Round-Up Saloon starting at 11:30 p.m. Merchandise will be auctioned off to raise money for the foundation.
