The 18th annual Celtic Celebration continues through Sunday at the Riverplex, 1000 Sandcastle Drive in West Homestead. Featured will be Celtic music, dance, food and beverages, an Irish dog tent, artisans, historians and vendors. Hours are 11 a.m. to midnight Saturday, and 9 a.m. to 6 p.m. Sunday. Tickets for adults are $8 in advance and $10 at the gate or $8 for senior citizens older than 60 and students with ID; $5 for active or retired military with ID, $3 for children ages 3 to 12 and free for children younger than 3. Call 412-422-1113.

JazzLive takes place from 5 to 7 p.m. Tuesdays at the Agnes R. Katz Plaza, 621 Penn Ave. The music then continues from 7 to 10 p.m. in the Backstage Bar in Theater Square, 655 Penn Ave. Playing this Tuesday for the last session of the season will be Dr. Nelson Harrison/Don Aliquo Sr. In case of inclement weather, JazzLive will be held on Wednesday. Admission is free. Programs are subject to change. Visit the Web site, www.pgharts.org, or call 412-456-6666.