Mahler's magnum opus to nature, his Symphony No. 3, is the longest symphony in the standard repertoire — the first movement alone runs a half-hour or more. Conducted by music director Stefan Sanderling, it takes up the Florida Orchestra's second masterworks program of the season and features a notable soloist, mezzo-soprano Susanne Mentzer, pictured here. This is a major community musical event that also includes the women's chorus of the Master Chorale of Tampa Bay and the Tampa Bay Children's Chorus. Concerts are at 8 p.m. Friday at Morsani Hall of Tampa Bay Performing Arts Center, Tampa; 8 p.m. Saturday at Mahaffey Theater, St. Petersburg; and 7:30 p.m. Sunday at Ruth Eckerd Hall, Clearwater. $20-$67. (727) 892-3337 or toll-free 1-800-662-7286; floridaorchestra.org.
John Fleming, Times performing arts critic