It is the tempo generally described as ‘fast’ though there are controversies as to the exact unit of measurement employed to determine the validity of the description. The tradition is to differentiate tempi as vilambit, madhya, and drut. The first, vilambit (slow) is half that of the madhya (medium) in tempo. The medium tempo, in its turn, is half of the drut (fast) tempo. In other words, Indian musicology, for many reasons settles on the concept of relative musical time as contrasted with absolute time.