At 44, the British composer Thomas Ad�s is already a lion of contemporary classical music. In this Sadler's Wells London production, his music - described as "sonic surrealism" - is muse to four choreographers. Wayne McGregor tackles "Concentric Paths," a violin concerto; Karole Armitage sets a duet to "Life Story" with piano and voice; and Alexander Whitley interprets "Piano Quintet" (with Mr. Ad�s on piano). The showstopper is Crystal Pite's "Polaris," set to the orchestra of the same name, which she has called "epic." With 66 dancers, so too is her dance. Part of Lincoln Center's White Light Festival.