Baha'ud'din represents the 20th generation of the Dagar parampara of the Dagarbani school of Dhrupad music. He began his training under the tutelage of his father, the great Rudra-Veena maestro, Ustad Zia Mohiuddin Dagar at the age of eleven.
After the demise of his father, he continued training in music under the able guidance of his uncle Ustad Zia Fariduddin Dagar, an eminent Dhrupad vocalist.
He has performed in prestigious Sammelans and Samaroahs in India and abroad. He has also recorded with labels such as: Music Today (India); Makars (France); Indian Music Archives (USA). He has been featured in various Classical Music programmes on the Doordarshan (CPC, and National) Channels; Star Plus Channel (Ninad); and on the Music Asia Channel. He has also featured in the documentary film - Dhrupad, 1983 and the feature film The Cloud Door, 1994 both directed by Mani Kaul.