| Hey Kaala BandarSrinivas, Naresh Iyer, Karthik, Bonnie Chakraborty, Ember · Prasoon Joshi Delhi-6 · Hindi Srinivas, Naresh Iyer, Karthik, Bonnie Chakraborty, Ember · Delhi-6 | Delhi-6 · Hindi | 2009 | 5:52 | |
| Chiggy WiggyKarthik, Suzanne D'Mello · Rajashri Blue · Telugu Karthik, Suzanne D'Mello · Blue | Blue · Telugu | 2009 | 5:11 | |
| Idhayam Idam MariyatheK. S. Chithra, Karthik · Na. Muthukumar Jodhaa Akbar · Tamil K. S. Chithra, Karthik · Jodhaa Akbar | Jodhaa Akbar · Tamil | 2008 | 6:37 | |
| Thiya ThiyaniMadhushree, Karthik · Rajashri Sudhakar Jodhaa Akbar · Telugu Madhushree, Karthik · Jodhaa Akbar | Jodhaa Akbar · Telugu | 2008 | 6:37 | |
| Shanno ShannoSrinivas, Sonu Nigam, Timmy, Karthik, BlaaZe, Sunaina, Vivienne Pocha, Tina · NA Yuvvraaj · Hindi Srinivas, Sonu Nigam, Timmy, Karthik, BlaaZe, Sunaina, Vivienne Pocha, Tina · Yuvvraaj | Yuvvraaj · Hindi | 2008 | 6:22 | |
| Shanno Shanno (remix by Krishna Chetan)Srinivas, Sonu Nigam, Timmy, Karthik, BlaaZe, Sunaina, Vivienne Pocha, Tina · NA Yuvvraaj · Hindi Srinivas, Sonu Nigam, Timmy, Karthik, BlaaZe, Sunaina, Vivienne Pocha, Tina · Yuvvraaj | Yuvvraaj · Hindi | 2008 | 2:38 | |
| BehkaKarthik · Prasoon Joshi Ghajini · Hindi Karthik · Ghajini | Ghajini · Hindi | 2008 | 5:13 | |
| Behka RemixKarthik · Prasoon Joshi Ghajini · Hindi Karthik · Ghajini | Ghajini · Hindi | 2008 | 5:13 | |
| Jiya Se JiyaRaqeeb Alam, Karthik Nokia Connections Raqeeb Alam, Karthik · Nokia Connections | Nokia Connections | 2008 | - | |
| Paisa PaisaMadhushree, Karthik · Vairamuthu Guru · Tamil Madhushree, Karthik · Guru | Guru · Tamil | 2006 | 4:59 | |
| AdeyyataMadhushree, Karthik · Veturi Guru · Telugu Madhushree, Karthik · Guru | Guru · Telugu | 2006 | 4:59 | |
| Hey Goodbye NanbaShankar Mahadevan, Karthik, Lucky Ali, Sunitha Sarathy · Vairamuthu Aaytha Ezhuthu · Tamil Shankar Mahadevan, Karthik, Lucky Ali, Sunitha Sarathy · Aaytha Ezhuthu | Aaytha Ezhuthu · Tamil | 2004 | 5:02 | |
| Jana Gana ManaA. R. Rahman, Karthik · Vairamuthu Aaytha Ezhuthu · Tamil A. R. Rahman, Karthik · Aaytha Ezhuthu | Aaytha Ezhuthu · Tamil | 2004 | 4:56 | |
| Nee Mazhai (Additional song as a background score)Karthik, Sunitha Sarathy · Vairamuthu Aaytha Ezhuthu · Tamil Karthik, Sunitha Sarathy · Aaytha Ezhuthu | Aaytha Ezhuthu · Tamil | 2004 | 1:09 | |
| Hey Goodbye PriyaShankar Mahadevan, Karthik, Lucky Ali, Sunitha Sarathy · Veturi Yuva · Telugu Shankar Mahadevan, Karthik, Lucky Ali, Sunitha Sarathy · Yuva | Yuva · Telugu | 2004 | 5:02 | |
| Jana Gana ManaA. R. Rahman, Karthik · Veturi Yuva · Telugu A. R. Rahman, Karthik · Yuva | Yuva · Telugu | 2004 | 4:56 | |
| Dhakka Laga BukkaA. R. Rahman, Mehboob, Karthik · Mehboob Yuva · Hindi A. R. Rahman, Mehboob, Karthik · Yuva | Yuva · Hindi | 2004 | 4:56 | |
| Khuda HafizKarthik, Lucky Ali, Sunitha Sarathy · Mehboob Yuva · Hindi Karthik, Lucky Ali, Sunitha Sarathy · Yuva | Yuva · Hindi | 2004 | 5:02 | |
| New NewKarthik, BlaaZe, Sunitha Sarathy, Tanvi Shah, Vijay Prakash · BlaaZe New · Tamil Karthik, BlaaZe, Sunitha Sarathy, Tanvi Shah, Vijay Prakash · New | New · Tamil | 2004 | 4:33 | |
| Naani VayaseKarthik, BlaaZe, Sunitha Sarathy, Tanvi Shah, Vijay Prakash · Veturi Naani · Telugu Karthik, BlaaZe, Sunitha Sarathy, Tanvi Shah, Vijay Prakash · Naani | Naani · Telugu | 2004 | 4:33 | |
| Zindagi Hai DuaMadhushree, Karthik, Pamela Jain, Gayatri Iyer · Mehboob Dil Ne Jise Apna Kahaa · Hindi Madhushree, Karthik, Pamela Jain, Gayatri Iyer · Dil Ne Jise Apna Kahaa | Dil Ne Jise Apna Kahaa · Hindi | 2004 | 5:25 | |
| Thiruvallikeni RaniSukhwinder Singh, Karthik · Gangai Amaran Udhaya · Tamil Sukhwinder Singh, Karthik · Udhaya | Udhaya · Tamil | 2003 | 5:16 | |
| Kadhal VettukiliSadhana Sargam, Karthik · Kabilan Parasuram · Tamil Sadhana Sargam, Karthik · Parasuram | Parasuram · Tamil | 2003 | 5:58 | |
| GirlfriendTimmy, Karthik, Tippu · Pa. Vijay Boys · Tamil Timmy, Karthik, Tippu · Boys | Boys · Tamil | 2003 | 5:00 | |
| Ale AleKarthik, Chitra Sivaraman · Kabilan Boys · Tamil Karthik, Chitra Sivaraman · Boys | Boys · Tamil | 2003 | 6:26 | |