1) Singer and actress Demi Lovato is a child star who turned recording artist. She first started as Angela on “Barney and Friends” in 2008; after two seasons, she moved on to several more kids’ shows on (where else) the Disney Channel. Lovato appeared on “As the Bell Rings,” “Camp Rock,” and “Sonny with a Chance.” While her acting career was heating up, she released some music. The albums Don’t Forget and Here We Go Again came in quick succession, in ’08 and ’09, and gave Lovato her first taste of musical success; she even opened for the Jonas Brothers’ Burnin’ Up tour. She’s had three Top 10 hits at this point in her career. Lovato was also a judge on the ’12 and ’13 seasons of “The X-Factor.” Lovato has overcome childhood bullying, depression, and an eating disorder to become an enduring dynamo in the music, television, and film industries. Some songs likely to be heard in her appearance tonight at the University of Pittsburgh Petersen Events Center are “Heart Attack,” and “Really Don’t Care,” both from 2013 Demi album. Also on the bill are Christina Perri and MKTO. 7 p.m. 3719 Terrace St., Oakland.
2) Poogie Bell is the featured performer at this week’s BNY Mellon JazzLive performance at Katz Plaza. Bell is one of Pittsburgh’s top percussionists and has toured with jazz great Marcus Miller and played with numerous others. Free. 5 p.m. Corner of Penn Avenue and 7th Street, Cultural District.
3) In 1853, the steamboat Arabia was built and launched in Pittsburgh. Three years later, it struck a tree and sank in the murky waters of the Missouri River, filled with countless items destined for the frontier. In 1987, after years of searching, Missourian Bob Hawley and his sons unearthed the remains of the Arabia and found thousands of artifacts perfectly preserved in the mud. Pittsburgh’s Lost Steamboat: Treasures of the Arabia at the Senator John Heinz History Center features nearly 2,000 of these objects, eyewitness accounts from passengers aboard the doomed vessel, and a memorial to the wreck’s only casualty—a mule tied to sawmill equipment on a lower deck. The exhibit runs through Jan. 4 and is open along with the rest of the Heinz History Center seven days a week from 10 a.m. to 5 p.m. 1212 Smallman St., Strip District.