Z. M. Dagar was born in the town of Udaipur, Rajasthan and began musical study with his father, Ustad Ziauddin Khan Dagar, court musician for the Maharana of Udaipur. He was trained both in vocals and in the rudra veena, an instrument used by vocalists to practice melodies. The veena was traditionally not played in public, but the young Zia Mohiuddin adopted it as his primary instrument, giving his first recital at age 16. Although he was discouraged by his father from experimenting with the structure of the veena, he nevertheless modified the instrument after his father's death to better equip it for solo performance, transforming it into a larger bass instrument : With the help of the instrument house Kanailal & Brother, he enlarged the tumbas and dhandhi to create greater resonance and to allow the notes to sustain longer and so better reproduce the techniques used in dhrupad singing. Because of these modifications, the instrument was too heavy to be held in the standard Northern posture, so he played instead in the Southern posture, with one tumba on the ground and one on the left knee.
Struggles and hardships
After India gained independence the princely states were abolished. The Dagar family lost the patronage of the court of Udaipur, and had to seek employment elsewhere. Finally they arrived in Mumbai. For 25 years they had to make ends meet by working in garages, selling bread, and rarely, playing instruments for movie scores. They did not have a tanpura, sitar, or veena, let alone a house. There was much cynicism about dhrupad, as his son Mohi Baha'ud-din recounted in an interview.
"Dhrupad? Who'll listen? Rudra veena? Play something else. Long alaaps? So boring!"
Playing style
Z. M. Dagar was known particularly for his slow development of ragas, typically performed only with tanpura accompaniment, and for his meticulous attention to microtonal inflections.
Established in 1982 The concept of making a Gurukul was entirely Ustad Zia Mohiuddin Dagar's. He envisioned a place where he would sit with his disciple and impart training in the 'Guru Shishya Parampara ' a method in which a few selected students study under one roof whilst staying with the guru. Ustad sahib put at least twenty years of his time and effort to give shape to this idea on his own and thus, the Gurukul came into being in 1982 at Palaspa - a village near Panvel - Mumbai.