The Concerto for Two Violins was a piece of classical music composed by Johann Sebastian Bach.
In 2375, the first movement ("Vivace") of the Concerto for Two Violins was played by Starfleet musicians at a reception held aboard the USS Enterprise-E for the Evora delegation. It was heard when Captain Jean-Luc Picard put on the alien headgear after talking to Chief Engineer Geordi La Forge and just as he was re-entering the banquet room where the reception was being hosted. (Star Trek: Insurrection)