For almost two centuries, four different designations have been used for one phenomenon: Musical Shashmaqam of Khorezm, Seven Maqams, Six and a Half Maqams, Tanbur Maqams. Subsequently, in practice, one name, Six and a Half Maqams, is increasingly asserted. It is noteworthy that in these variants, by analogy with Shashmaq, the quantitative side of the definition of maqam as a modal system comes to the fore: six, six and a half, and seven modal formations.