 Formerly, it was used by the tenor part in vocal music but its use has been largely supplanted either with an octave version of the treble clef where written alone or the bass clef where combined on one stave with the bass part.† When the C-clef is placed on the 5th line of the stave, it is called the baritone clef.It is precisely the equivalent to the other more common form of the baritone clef, an F clef placed on the 3rd line (see above).