Especially A R Rehman & Yuvan, Devisri. Although Thaman entered the film industry. Karthik started his professional career as a backing vocalist and has since been working as a playback singer.Technologies Pcounter A- One Eleksound Circusband A- Open AOpen A & R A- Team A- Tech Fabrication A- to- Z Electric Novelty Company A- Trend Riva AAC HE- AAC AAC- LC AAD Aaj TV Aakash Aalborg Instruments and Controls Aamazing Technologies Aanderaa. A & B Design A Basses A- C Dayton A class A- Data Technology A & E A& E Television Networks Lifetime TV A & M Supplies Apollo A- Mark A. He has sung in multiple languages including Tamil Bengali , Malayalam, Kannada, Telugu, in other languages like Odia Hindi.
Ofcourse “ Ilayaraja”.