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 ]   audio   plural A’s or As in Western music, the sixth Be aware in the scale (= series of notes) that commences to the Observe C, or a set of notes dependant on this ObserveWhen the ancient Greeks adopted the alphabet, that they had no use for just a letter sym