most of the base interments use the base clef i think the cornet or Trumpet is the only interment that uses treble clef.
aka the "C" clef ... the middle line is the note "C".
The base clef is also called the f clef, because if you look at it, the line in between the two dots of the base clef when it is on a staff is the f line.
The Great Stave is the combination of both the treble clef and the base clef
The 'Cello is in Concert Pitch (C) so A above middle C will equal 440 (same as the piano)
bass clef
violas dont use treble clef they use alto clef
Bass and also tenor clef.
If you mean which clef does a violinist use then it's the treble clef
treble clef
Bass clef.
A major 2nd below A is G.
The piano uses both the Treble clef (for higher pitches) and the Bass clef (for lower pitches). It plays in the key of C. Sometimes it is misinterpreted that the Treble clef is for the rigth hand and the Bass clef if for the left hand. This isn't true. Both hands can use the Treble clef or Bass clef, or even the right hand can use the Bass clef and the left hand can use the Treble clef.