| 1. Kumar Sanu does not smoke. |
| 2. It is not known if Kumar Sanu drinks alcohol. |
| 3. Sanu played a musical instrument in his early days. |
| 4. He struggled in the music industry for 7 years before getting an opportunity in 1987 from Jagjit Singh to sing in the Hindi film Aandhiyan. |
| 5. Kumar Sanu holds the Guinness World Record for recording 28 songs in a day. |
| 6. While some of his family members received classical music training, he did not. |
| 7. Kumar Sanu had not collaborated with A.R. Rahman due to his preferences for not working on music recordings at night. |
| 8. His father was a music composer for local plays. |
| 9. As a child, he was known as Chhaanu, a name he later modified to Sanu. |
| 10. Kumar Sanu is affiliated with the Bharatiya Janata Party (BJP). |
| 11. Initially, his name was misspelled as Shanu in Bollywood before being corrected. |
| 12. He named his eldest son Jico after his admiration for the Brazilian football team. |
| 13. In 2023, Kumar Sanu served as a judge on the singing reality show 'Indian Idol' aired on Sony Entertainment Television (SET). He debunked rumors of the show being scripted, emphasizing its authenticity and reality-based format during an interview. |
| 14. He has recorded over 13,500 songs for over 800 films throughout his career. |
| 15. He began performing publicly in 1979, singing at shows and restaurants around Calcutta. |
| 16. Composers Kalyanji-Anandji gave him the stage name Kumar Sanu to provide wider appeal beyond a strictly Bengali audience. |
