The Circa '21 Dinner Playhouse's Singin' in the Rain will have you laughin' at clouds, no matter how dark the weather. The 1983 musical is based on the beloved 1952 film, with its screenplay (and the musical's book) by Betty Comden and Adolph Green, and Nacio Herb Brown and Arthur Freed writing music and lyrics for most of its tunes, many of which are borrowed from 1920s and 1930s films (by MGM, natch, which concocted this film). Thus, the show is in many ways a jukebox musical, and Circa '21's production uses the 2012 revival's script, which is a pared-down and shuffled version of the original.

The roots of the play The 39 Steps were in a 1915 magazine serial by Scottish novelist John Buchan, which became a popular novel, which spawned four more books about its protagonist. It was adapted for film three times, notably (and to great acclaim) by Alfred Hitchcock, and once for television. The first version of the play, written by Simon Corble and Nobby Dimon and billed as a "parody," toured in 1995. Patrick Barlow consequently rewrote their script, premiering his adaptation in London in 2005. His version hopped the pond to become a long-running Broadway smash, nominated for six Tonys in 2008 (including Best Play) and winning two. This month, more than 100 years later, a form of Buchan's story is playing live at the Richmond Hill Barn Theatre. And I highly recommend you see this ingeniously staged, well-performed lark of a show.

Assassins, at the Black Box Theatre, is the cheeriest musical about unhappy people who made bad choices that I've ever seen. And prior to Thursday's performance, I didn't know it was literally about those who killed American presidents, or tried to – I just saw "music and lyrics by Stephen Sondheim" and said, "I'm in."

Chivalry is not dead. In fact, in the form of Miguel de Cervantes' Don Quixote, it's very much alive at the Timber Lake Playhouse in the theatre's latest production: the 1965 Broadway-musical hit Man of La Mancha.