Complex sentence: He was also awarded a fellowship that allowed him to study at the Mozarteum Salzburg in 1938, where he took several courses with Herbert Albert and visit several times with the festival's chief conductor, the renowned Wilhelm Furtwängler.
Split into simpler sentences: He was also awarded a fellowship that allowed him to study at the Mozarteum Salzburg in 1938. Attending the Mozarteum Salzburg allowed him to take several classes with Herbert Albert and visit several times with the festival's chief conductor Wilhelm Furtwängler.