A Piano Made of Telephones: A Fluxus Machine

This is a Fluxus score. Fluxus is a type of performance art. A Fluxus score, like a musical score, is a sort of recipe for a performance. For more information, read The Fluxus Performance Workbook.

This performance requires several telephones, preferably telephones of as many different types as possible. Ideally, each should produce a unique sound [...]