While most of the city's off-the-Strip neighborhoods sit dark, the lights at the Liberace Museum, 1775 E. Tropicana Ave., stay on well past midnight once a month for an unadvertised, cabaret-style show called the Composers Showcase.

Minutes after their rehearsals and performances on the Strip, musical directors, songwriters and actors from Las Vegas' big name shows gather a few miles down the road to perform for a different audience -- one another.