Celebrating a beloved Hawaiian musical tradition dating back to the arrival of Portuguese immigrants in the 19th century, the Maui Arts & Cultural Center presents its fourth annual 'Ukulele Festival from 1 to 6 p.m. Sunday. Featuring many of the top players in the state, admission is free to this outdoor concert on the Events Lawn. Gates open at 12:30 p.m. Blankets and lawn chairs are encouraged. Coolers are not permitted; food and beverages will be available for purchase. A dozen finely crafted ukuleles donated by top manufacturers will be given away as door prizes throughout the afternoon.