Zia Mohiuddin Dagar is famous for?

Zia Mohiuddin Dagar was a renowned exponent of the Rudra Veena, one of the oldest string instruments in Indian classical music. He belonged to the Dagar lineage of dhrupad musicians and was instrumental in reviving and popularizing the instrument in the 20th century. Jaltarang, mandolin, and guitar are different instruments - jaltarang uses water-filled bowls, while mandolin and guitar are Western string instruments.