Q. Ghurrat-al-kamal (on music) was written by whom?
Answer: Amir Khusrau
Notes: The famous Sufi poet, Amir Khusrau was the author of the poem Ghurrat-ul-Kamaal (the Prime of Perfection). Excerpts of the  works done by him are Tughluq Nama, Wast-ul-Hayat, Nuh Sipihr, Laila Majnun, etc. He was the court poet of Alauddin Khilji  and a spiritual disciple of Nizamuddin Auliya, Delhi.

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