James Harmon Blues Band: 7:30 p.m. Friday, McCoy Studio Theater, Maui Arts & Cultural Center. Admission. Call 242-7469, Maui.
Christian music concert: "Rejoice! A Celebration of Praise" with Alex McAngus, Roslyn, the Surfaris (hit song: "Wipe Out"), Steve Laudise Band, Kumulani Praise Band and others, 9 a.m. to 6 p.m. Saturday, Waimea Falls Park. Kama'aina tickets $10.95 general, $7.25 youth, free for kids 5 and younger; includes park admission. No coolers or picnic baskets. Call 638-8511.
Hempfest '96: With Roots Revolt, Dread Ashanti, Red Session, FrogChild, THC and others, 9 a.m. to 8:30 p.m. Saturday, Waimanalo Polo Fields. Food and craft sales. Tickets $5 in advance, $7 at the gate. Call 261-2324. Volleyball tournament begins 9 a.m.; call 262-6036.
George Winston in concert: The Grammy Award-winning pianist performs 8 p.m. Saturday at the Blaisdell Concert Hall. Tickets $17 and $19; available at Tempo Music, House of Music, UH Campus Center, Jelly's and the Waikiki Beachcomber MTI desk. Charge by phone at 545-4000 or 800-333-3388. Bring a can of food for the Food Bank.
Big Island Slack Key Guitar Festival: Noon to 6 p.m. Sunday, Afook-Chinen Civic Auditorium. With Cyril Pahinui, Ledward Kaapana, George Kuo, Dennis Kamakahi and others. Admission $5 general, free for children. Call the East Hawaii Cultural Center at 961-5711, Big Island.
"Piano Reflections": Mary Anne Unrau performs works by Mendelssohn and Rachmaninoff, 4 p.m. Sunday, Kawaiahao Church. Free. Call 522-1333.
Love & Rockets perform: Doors open 7:30 p.m. Monday at the Groove. Tickets $17.50. Call the Edge at 296-3343 or the Connection at 545-4000 or 800-333-3388.