Possible Clues:

• Fuente of cigar fame
• Hero of Bellini's 'I Puritani'
• Conductor friend of pianist Vladimir
• Trumpeter Sandoval
• -- Toscanini, Italian conductor 1867-1957
• He became New York Philharmonic music director 30 years before Leonard
• Sandoval of jazz
• 'Alternatino with ___ Castro' (comedy series)
• ___ Schomburg, Harlem Renaissance figure
• Historian Schomberg of the Harlem Renaissance