“Hair”here:The 50th anniversary of the rock musical “Hair,” above, June 14 - July 2, opens the 37th season of Muhlenberg Summer Music Theatre (MSMT) at Muhlenberg College, Allentown. Join the Age of Aquarius and celebrate the freewheeling counterculture of the 1960s with a “tribe” of non-conformists as they groove to the music, including 1960s hits “Good Morning Starshine” and “Let the Sunshine In.” Director James Peck returns to MSMT following last season’s production of “In the Heights.” He’s reunited with music director Ed Bara and choreographer Samuel Antonio Reyes. Tickets: Muhlenberg College box office, Trexler Pavilion for Theater and Dance, 2400 Chew St., Allentown; muhlenberg.edu/SMT; 484-664-3333.

Night of hits:Three Dog Night, led by founder Danny Hutton, vocals, second from right, performs at 8 p.m. June 11, Sherman Theatre, Stroudsburg. The pop-rock band had 21 Billboard Top 40 hits (including three No. 1 hits) between 1969 and 1975. The group introduced songwriters Paul Williams (“An Old Fashioned Love Song”), Hoyt Axton (“Joy to the World”), Laura Nyro (“Eli’s Comin’”), Harry Nilsson (“One”), Randy Newman (“Mama Told Me Not to Come”), and “Easy to Be Hard,” from the rock musical “Hair.” The lineup includes Michael Allsup, guitar; Paul Kingery, bass; Pat Bautz, drums; Eddie Reasoner, keyboards, and David Morgan, vocals. Opening the concert: Stewart v. Steakelum. Tickets: Sherman Theater box office, 524 Main St., Stroudsburg; shermantheater.com; 570-420-2808.

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World premiere:“12ness,” June 9-18, “IceHouse Tonight Series,” Charles A. Brown IceHouse, 56 River St., Sand Island, Bethlehem, was written by composer Charlie Barnett about Arnold Schoenberg and George Gershwin. “12ness” is based on the friendship, and tennis rivalry, between two very different early 20th-century composers: the respected but severe Schoenberg and the wildly-popular Gershwin, who sponsored Schoenberg’s family when they fled Nazi-era Vienna for the United States. Left to right, above, actors Robert Salsburg, Syd Stauffer, Stephanie Gawlas Walsh and Ryan MacNamaral.“ The play’s title refers to Schoenberg’s 12-tone serial compositional technique. A “Meet the Playwright” reception follows the June 10 performance. Tickets: ckplayers.com, 610-395-7176.

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