Musician Alain Roche reached the high notes by performing a piano concert - while hanging off a crane!
It was all part of festivities to mark the re-opening of a museum in Geneva, Switzerland.
Alain played to crowds for about an hour while he and his piano were suspended in the air by a crane.
It's thought 1500 people watched the spectacle.
Check out the clip to see the Alain in action...