In 1927, Ukrainian conductor Nikolai Malko played Vincent Youmans’ song “Tea for Two” for Dmitri Shostakovich and bet 100 roubles that the composer couldn’t reorchestrate it from memory in less than an hour.

Shostakovich did it in 45 minutes.

He later incorporated the arrangement into Tahiti Trot and used it as an entr’acte in his 1930 ballet The Golden Age.

(Thanks, Allen.)