The American composer George Gershwin (1898-1937) wrote the energetic song I Got Rhythm, with lyrics by his brother Ira Gershwin, in 1930 for the musical Girl Crazy. The story of Girl Crazy takes place in the theatre world of the 1930s. The Gaiety Theater in Deadrock, Nevada, is practically bankrupt, but the rich banker's son Bobby Child turns things around. His passion for the theatre leads to the customary love vicissitudes and comical intricacies - and a new successful show.I Got Rhythm, now a jazz standard, has been performed over the years by numerous famous and not-so-famous artists. The chord scheme has become so well-known that it has been named rhythm changes, and is oftenused by jazz musicians.