“An Evening of Cool Jazz” with the atmosphere of a 1920s “speak-easy” is planned for 7 to 10 p.m. Saturday at the Hilton Garden Inn, 2000 Garden View Lane, Cranberry Township, to benefit the Community Health Clinic of Butler County. Featured will be themed food and beverages plus live jazz by Pittsburgh-area singer Antoinette and jazz musicians. Tickets are $100 and are available by calling 724-841-0980, Ext. 101.

Harrisville Community Band will present its annual spring concert at 7 p.m. Friday at the Harrisville Volunteer Fire Company Hall, Route 58. Admission is free. Fire company personnel will have refreshments for sale at intermission.

Harmony in the House hostsBejae Fleming and Chad Elliot at 7 p.m. Friday at Bottlebrush: A Gallery for the Arts, 539 Main St., Harmony. Admission is $10. Call 724-452-0539.

Allegheny RiverStone Center for the Arts presents Alvin Zhu in Piano Extravaganza at 2 p.m. Sunday in Lincoln Hall, 42 S. Palmer St., Foxburg. Tickets are $25 for adults, $20 for ARCA members and $10 for students. To reserve tickets, call 724-659-3153.Bach Choir presents “Jazz Mazz” with Pittsburgh's Joe Negri, along with “Missa Kenya” by Paul Balser at 8 p.m. Saturday and at 4 p.m. Sunday at the New Hazlett Theater, 6 Allegheny Square, North Side. Tickets are $10 to $30. Call 888-718-4253.