Much Viola music is written in this clef. It is very old fashion, but someone studying this instrument should be familiar with this arrangement of notes on this clef so it does not throw them when they are playing in a group that uses this clef for this instrument. It contains all the notes of the Grand Staff, but middle C (Mama Cat) is on the center line of the staff with high B (little Bear), D (little Dog and F (tree frog) are on the ledger lines above the staff. The ledger lines below the clef are low D (Daddy Dog, B (Daddy Bear) and G (Daddy Goat). The size of this set of cards is 8 ½ by 11.