New World Symphony closes its 20th-anniversary season with a pair of Russian masterpieces performed with symphony alumni and conducted by the boss man himself, Michael Tilson Thomas. First up is Act III from Tchaikovsky's Swan Lake — the first ballet to be scored by a symphonic composer and said to be partly based on one of the composer's abandoned operas. Stravinsky's The Rite of Spring follows, musically limning the ballet inspired by a pagan tale of a young girl who dances herself to death; one assumes that Miami audiences — who know a thing or two about gratuitous dancing — will bring down the house with applause rather than the famous fistfights and rioting that ended the piece's 1913 premiere.