Summer Festival: Lehigh Valley Hospital - Muhlenberg’s 57th annual Summer Festival is back, noon - 8 p.m. Aug. 18 and noon - 5 p.m. Aug. 19 on the north side of the hospital campus near Routes 22 and 378, off Schoenersville Road, Bethlehem. Admission is free. “Thanks to the community’s support, we have helped raise millions of dollars that have gone towards improving services at the hospital,” said Harold Fabian, founder and former chairman of the festival committee. There’s entertainment, arts and crafts, children’s activities, and food. GirlCrue performs 1 - 4 p.m. Aug. 18. The Large Flowerheads performs 5 - 8 p.m. Aug. 18. School of Rock performs 1 - 4 p.m. Aug. 19. Information: LVHN.org/summerfestival; 888-402-LVHN

Classics Of Rock: Dave Mason and Steve Cropper bring their “Rock & Soul Revue” to Penn’s Peak, Jim Thorpe, at 8 p.m. Aug. 18. Rock and Roll Hall of Fame members Dave Mason and Steve Cropper perform together for the first time on the same stage to deliver a night of hits. Mason is a founding member of the band Traffic, successful solo artist, and consummate guitarist, songwriter and producer. Cropper was a member of Booker T and the MGs, the Stax Records house band. Songs expected in the concert include “Only You Know And I Know,” “We Just Disagree,” “Feelin’ Alright,” “(Sittin’ On) “The Dock of the Bay,” “Green Onions” and “Knock on Wood.” Tickets: Penn’s Peak box office, 325 Maury Road, Jim Thorpe; pennspeak.com; ticketmaster.com; 800-745-3000

August “Jazz Upstairs”: The Tony Tixier Trio returns to Miller Symphony Hall, Allentown, at 7:30 p.m. Aug. 17 for the “Jazz Upstairs” series in the Rodale Community Room. Tixier, French-born pianist and composer, moved to New York City in 2012 and now lives in Los Angeles. His 2006 debut album was “Fall In Flowers.” His fifth and latest album is “Life Of Sensitive Creatures.” Tickets: Miller Symphony Hall box office, 23 N. Sixth St., Allentown; allentownsymphony.org; 610-432-6715