Música, Maestro!

Nelson Eddy

Narrator / Characters (segment "The Whale Who Wanted to Sing at the Met") (voice)

Dinah Shore

Self (voice)

Benny Goodman

Self (voice)

Jerry Colonna

Narrator (segment "Casey at the Bat") (voice)

Andy Russell

Self (voice)

Sterling Holloway

Narrator (segment "Peter and the Wolf") (voice)

Tatiana Riabouchinska

Silhouetted Dancer

David Lichine

Silhouetted Dancer

Patty Andrews

Andrews Sisters (singing voice) (uncredited)

Maxene Andrews

Andrews Sisters (singing voice) (uncredited)

Laverne Andrews

Andrews Sisters (singing voice) (uncredited)

Ken Darby

The King's Men / Choral Director (Ken Darby Chorus) (singing voice) (uncredited)