Ustad Barkat Ali Khan was the younger brother of what Hindustani classical vocalist, from the Kasur Patiala Gharana?
Barkat Ali Khan: Ustad Barkat Ali Khan (1908 – 19 June 1963) was an Indian-Pakistani classical singer, younger brother of Bade Ghulam Ali Khan and elder brother of Mubarak Ali Khan, and belonged to the Patiala Gharana of music.
i don't know