A clef is a symbol used in music notation to indicate which notes ... Alto clef. Picture: Alamy A similar clef is the tenor clef, another C clef but it makes the second-top line of the stave the ...

Treble Clef on upper staff ... Another example of 12th century notation. Note the variation of the letter F to the left of each read line. (image: The Schøyen Collection) These initial letters ...

Treble Clef on upper staff ... Another example of 12th century notation. Note the variation of the letter F to the left of each read line. (image: The Schøyen Collection) These initial letters ...