Thaman is the grand child of Ghantasala Balaramayya, director and producer, known for producing the Telugu film Seetarama Jananam, the debut film of Akkineni Nageswara Rao. He hails from a family of musicians from Pottepalem, Nellore District. His father Ghantasala Siva Kumar was a Drummer, who worked for seven hundred films, under composer, K. Chakravarthy, his mother Ghantasala Savitri is a playback singer and his aunt is singer P. Vasantha. He is married to Play back singer Sri Vardhini. At the age of nine, he joined S.P. Balasubramaniam, Ilaiyaraaja's brother, and G. Anand as a rhythm pads player, and discontinued studies when he lost his father at the age of 13. He was compelled to make his hobby into a profession to meet the crisis in his family. He then joined Raj-Koti team, and worked for three years on sixty films and then joined M. M. Keeravani and worked with him for three years completing thirty films. He has also gained experience from composers like Vandemataram Srinivas, Chakri, R. P. Patnaik and Devi Sri Prasad. He then spent six and a half years under the tutelage of Manisharma and worked on eighty films with him. On the whole he put in fourteen years of rhythm and keyboard programming with the veterans before branching out on his own. He began his career as a composer with the Tamil film Sindhanai Sei, while his first Telugu film was Kick in 2009. Aagadu in 2014 was Thaman's 50th film as a music director. He owns a music band named Thakkali.