In these two documentaries, filmmaker Frank Scheffer trains his lens on conductors who've made it their life's work to interpret composer Gustav Mahler's music to perfection. Riccardo Chailly discusses his commitment to the master's compositions in Attrazione d'Amore, while Luciano Berio -- with his acclaimed piece "Sinfonia" -- salutes Mahler and other composers, including Arnold Schoenberg and Igor Stravinsky, in Voyage to Cythera.