Started by Rajkalyan Roy in year 1991-1992 with the inspiration by his father Dilip Roy a reckoned name in Music Direction, Arrangement at diligent Violin. The company operation not only serves of the music thirst of the mass but also help of the upcoming singer and musician professionally over the years. Celebrity like Kumar Sanu, Usha Uthup, Abhijeet, Babul Supriya as well as senior Rabindra Sangeet exponent like Suchitra Mitra, Kanika Bandopadhyay and Dwijen Mukhopadhyay have recorded their voice under the label UD Series.