39 DIVIDED BY 4: Dallas Summer Musicals brings Alfred Hitchcock’s The 39 Steps to the Majestic Theatre tonight through Sunday. The stage version of the murder mystery is based on one of Hitchcock’s earliest films, made before he headed off to Hollywood for good. The play’s director, Maria Aitken, explains to dallasnews.com how she staged the show with four actors playing more than 150 characters.

MUSIC BITS: Denton’s Midlake spills its guts to Preston Jones about the making of its soon-to-be-released The Courage of Others (which you can stream here). (dfw.com) … HEALTH, plus local acts Doug Burr, Whiskey Folk Ramblers, Seryn, Ishi and others have been added to the NX35 lineup (nx35.com) … The Toadies announce the dates for the third Dia de Los Toadies Festival and feed the rumor that they may release an album in 2010. (DC 9 at Night) … Dallas hip-hop collective Damaged Good$ has released the next one of its charity singles. (quickdfw.com)

AMON CARTER ADDS ON: The Amon Carter Museum has added The Potter, one of American artist George de Forest Brush’s “lost” paintings of Native Americans to its collection. The painting will be on display upstairs at the museum beginning Friday. (artdaily.org)