Ossia
With ossia ( ital. Ossia , "or" from o sia , "or it was") is a score one game variant or alternative above or below a grading system named, which can be played in place of the original.
literature
- David Fallows: Ossia . In: Stanley Sadie, John Tyrrell, George Grove (Eds.); The new Grove Dictionary of Music and Musicians . Oxford University Press, Oxford 2001, ISBN 0-19-517067-9 .