It is in the domain of music in particular that the contribution of Muslims is the greatest. It is, however, difficult to claim that it is really Muslim. What they have practised since medieval times is Hindu classical music with its Guru-Shishya parampara. The gharana (school) system is the extension of this parampara or tradition. Most of the great Muslim musicians were and are originally Hindu and they have continued with the tradition of singing an invocation to goddess Saraswati or other deities before starting their performance.
The Legacy of Muslim Rule in India, New Delhi, Aditya Prakashan, 1992