This triple bill of ballets, with an additional glittering pas de deux, is a delightful introduction to the range and excitement of American ballet theatre's repertory. The first piece is Les Sylphides in which Mikhail Baryshnikov is the poet surrounded by the drifting chorus of sylphs. The Sylvia Pas de deux is a sparkling duet for Martine van Hamel and Patrick Bissell, and it is followed by Triad, one of Sir Kenneth MacMillan's most poetic and sensitive short ballets. Finally, in a blaze of brilliant dancing, The Grand Pas from Paquita shows off the technical virtuosity of ABT's dancers in a cascade of mosk-Spanish bravura choreography staged by Natalia Makarova from the original Petipa version.