Mandy Patinkin, James Taylor, Yo-Yo Ma and the Boys Choir of Harlem join the Boston Pops and Boston Symphony Orchestra in an Oct. 15, 2000, gala marking Symphony Hall's 100th birthday. Highlights: John Williams leads the Pops (and the Chieftains) in music he wrote for the film "Far and Away"; Patinkin sings the novelty number "Singing in the Bathtub"; Taylor performs with the Boys Choir; Yo-Yo Ma plays a movement from Bach's Cello Suite No. 3; Seiji Ozawa leads the BSO in Ravel's "La Valse."