Question

what changes were noticed when the indian system of vocal music interfaced with the arab'iranian and centra asian tradition

Answer 1

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The new ragas came to existence and composed when the indian system of vocal music interfaced with the arab iranian and central asian tradition.The new of music include sufi and bhakti traditions strengthen, it was the akbar court which give support to the singing.During that era  Hindustani classical music got too much popular. The music was actually the fusion of different traditions.