! safiyuddin_udfretratios.scl ! Two conjunct tetrachords in an octave from Ud fret ratios by Safi al-Din Urmavi 21 ! 256/243 18/17 162/149 54/49 9/8 32/27 81/68 27/22 81/64 4/3 1024/243 72/17 648/149 216/49 9/2 128/27 81/17 54/11 81/16 16/3 2/1