Sripathi Panditaradhyula Balasubrahmaiam , is an Indian film playback singer, actor, music director, voice actor and film producer. He is mostly referred to as S. P. B. or Balu.Balasubramanyam is married to Savitri and has two children, a daughter Pallavi, and a son S. P. B. Charan, also a playback singer and film producer.Balasubrahmanyam made his debut as a playback singer on 15 December 1966 with Sri Sri Sri Maryada Ramanna, a Telugu film scored by his mentor, S. P. Kodandapani.The first Non-Telugu song that he recorded just eight days after his debut Telugu song was in Kannada in 1966 for the film Nakkare Ade Swarga starring Kannada comedy stalwart T. R. Narasimharaju.He recorded his first Tamil song "Iyarkai ennum ilaya kanni" in the 1969 film Shanthi Nilayam starring Gemini Ganesan. He sang "Aayiram Nilavae Vaa" for M.G.R in the Tamil film Adimai Penn. He was then introduced to Malayalam film industry by G. Devarajan in the film Kadalpalam.