As Berlin could not read or write music, and could only pick out tunes on a specially designed piano that transposed keys automatically, he required an assistant to make up his piano parts. Hal Borne – Astaire's rehearsal pianist – performed this role in "Top Hat" and recalled working nights with him in the Beverly Wilshire Hotel: "Berlin went 'Heaven...' and I went "dah dah dee" 'I'm in Heaven' "(dah-dah-dee)". He said, 'I love it, put it down.'" These parts were subsequently orchestrated by a team comprising Edward Powell, Maurice de Packh, Gene Rose, Eddie Sharp, and Arthur Knowlton who worked under the overall supervision of Max Steiner.