The Aletheia Piano Trio: Beethoven, Piano Trio in C Minor; Fanny Mendelssohn, Piano Trio in D Minor; Shostakovich, Piano Trio No. 2 in E Minor. 7:30 p.m. WCR Center for the Arts, 140 N. Fifth St., Reading. Free. 610-6988465. chambermusicreading.org.
Folk, pop. noon-1 p.m. Roasted, 22 W. 4th St., Bethlehem. Free. 610419-9180. southsideartsdistrict.com/ out-to-lunch-concert-series/.
REO Speedwagon: 8 p.m. Wind Creek Event Center, 77 Wind Creek Blvd., Bethlehem. $49.50; $59.50; $69.50. 610-297-7414. windcreekbethlehem.com. rain storm; 60-piece operating amusement park and operating drive-in movie theater; Thomas the Tank Engine and Friends. 12:30-5:30 p.m. Merchants Square, 1901 S. 12th St., Allentown. $10; $8, seniors; $5, ages 5-12; free ages 4 and under. 610-797-7743. modeltrainexhibit.com.. Peter Pan Jr.: Center Stage Theatre presents the musical that whisks you away to a place where dreams are born and no one ever grows up. 7 p.m. Also Sat. Tamaqua Community Arts Center, 125 Pine St. $15; $12, seniors, students. 570-668-1192. tamaquaarts.org.