What is the song playing in the end credits of Sherlock Holmes?

He liked to play classical pieces on his violin to help him think when he was stuck on a case.

In 'The Adventure of the Mazarin Stone,' he allegedly played The Barcarolle from the Opera The Tales of Hoffmannwhile waiting for Count Negretto Sylvius and Sam Merton to make a decision, but it turned out the music came from a phonograph record.