 In 1966, they performed the Mozart Double Piano Concerto under the baton of Yehudi Menuhin in Gstaad and other venues in Europe.Yaltah and Joel Ryce were soloists in Saint-Saëns' "The Carnival of the Animals" for the BBC.In 1967, Yaltah and Joel recorded the entire duet repertoire of Mozart in America for Everest Records, the first time that this was done by one team of artists.