Khan was born and brought up in Reeth kheri village, near Patiala, Punjab, to Sarbjit Kaur and Jaswant Singh, who is an employee of health department in Patiala. Kamal started learning music at age five from his uncle Shauqat Ali Dewana, who became his musical mentor.
Composer duo Vishal-Shekhar who were also mentors on the show, became his real life mentors and eventually offered him his debut playback song, Wallah Re Wallah in Tees Maar Khan (2010), released a day before the show ended.
The archaeological site of Chandraketugarh is located beside the Bidyadhari River, in the district of North 24 Parganas, at a distance of about 35 kilometres north-east of Kolkata.
It lies on the road to Haroa, at a distance of 1 kilometer from Berachampa.
For many years, this place has been excavated and relics of several periods unearthed such as Northern Black Polished Ware (NBPW) relics, evidences belonging to the period of 400 BC to 100 BC and relics belonging to Maurya period, Gupta period, Kushanas period and late Gupta period.
A prayer hall of 45 sq km dating back to 700 to 600 BC and Kharosti script are some of the other notable evidences.
Some historians believe that Chandraketugarh and adjoining areas is the place that was referred to as “Gangaridai” by the ancient Roman and Greek writers.
The place derived its name from the urban civilization Chandraketugarh that flourished in this place for some six eras, under the rule of the mythical King Chandraketu.
When his dad went there to get Kamal's first salary, he cried and realised that he should let Kamal pursue his singing.
His career turnaround came when in 2010, he was selected as a contestant in singing reality show Sa Re Ga Ma Pa Singing Superstar.
He had music director duo of Vishal-Shekhar as mentor-judge.
At the grande finale, held at Andheri Sports Complex, Mumbai on 25 December 2010, he went on to win the show, was also a Grande MK II car and a Hero ZMR bike.