The first several minutes of Damian Lanigan's "Dissonance," now at the Falcon Theatre, are devoted to a testy debate between the two violinists in a string quartet regarding the proper tempo for playing a piece by Mozart. James (Daniel Gerroll), older of the pair, argues for the traditional moderate pace; Hal (Peter Larney), tired of simply satisfying audience expectations, wants it performed at greater speed.

An inattentive mother who gave birth to three daughters from three different fathers should not expect to be remembered fondly after her death. In "Seatbelts Required," Kimberly Demmary's new play, currently at the Actors Workout Studio, the three half-sisters, who gather in the deceased's home following the funeral , take turns over the next two hours assailing their mother, fighting among themselves, crying, drinking beer in Act One and Tequila in Act Two, and revealing a few shocking secrets.