Cabaret? I did it with a cast of fifteen (Sally, the Emcee, Cliff, Schneider, Schultz, Max/Officer, Ernst, Kost, four Kit Kat girls and three Kit Kat boys) on a completely static set, the MD re-orchestrated down to a 4-piece band (piano, bass, drums, reeds who doubled flute, clarinet, alto sax) and it was amazing. The actor playing Max was actually the piano player, which we did because we could, and because it worked well with the director's vision for the show. We kept it incredibly minimal, with a hexagonal platform (with steps on four sides, and the band underneath) and six hexagonal stools and a big red sheet which served a lot of purposes, and that was all the set elements, plus hand props. It was the easiest musical tech week I have ever done!