aA bA cA dA eA fA gA hA iA jA kA lA mA nA oA pA qA rA sA tA uA vA wA xA yA zA [ C/U ]   new music   plural A’s or As in Western songs, the sixth note in the size (= number of notes) that begins to the Notice C, or even a list of notes dependant on this Notice A is commonly util