The cast of the Guthrie's "West Side Story" dances it out. /T Charles Erickson

The killing and the singing have been extended for two murderrific Twin Cities musicals.

"West Side Story" at the Guthrie Theater has added a pair of performances to the virtually sold-out run of the Leonard Bernstein/Stephen Sondheim/Arthur Laurents/Jerome Robbins show about star-crossed lovers in 1950s New York. The new performances are both on Sundays: Aug. 5 at 7 p.m. and, on closing day, Aug. 26, at 1 p.m. Tickets to the musical, which Rohan Preston called "thrilling," are available at guthrietheater.org.

They've added a whole week of murder and showtunes to "Glensheen" in St. Paul. The History Theatre's witty musical comedy, based on the infamous Glensheen killings in Duluth, returned this summer for its fourth consecutive year at the the theater. "Glensheen" tickets are available through Aug. 5 at historytheatre.com.