Karthik G has been learning music since the age of 4. Initially under the guidance of Vid. P S Seethalakshmi and Vid. Sethurama Iyer (A direct disciple of Madurai Mani Iyer), he has pursued his music training under various gurus– Vid. R S Nandakumar and Vid. H S Mahalakshmi at Mysore, Vid. Bangalore S Shankar in Bangalore, and Vid. Suresh Kumar at Pondicherry. He is currently pursuing advanced training under Vid. O S Thiagarajan (Chennai) and Ganakalabhushana Vid. R A Ramamani (Bangalore).
Karthik has performed at various venues in Chennai, Bangalore, Mysore and Kerala. He has performed at the Spirit of Youth Festival at the Madras Music Academy (2016) and has received prizes in various competitions. He is the recipient of Ananya Nadajyoti Kala Pratibha Puraskar (2013).
Currently, Karthik is pursuing PhD in Music at Jain (Deemed-to-be University) as a Junior Research Fellow of the University Grants Commission.