When was the Punjabi singer featured in "Lak Mera Kach Warga" born? 
Lak Mera Kach Warga:  The album features Amar Singh Chamkila and Amarjot as the lead singers. Amar Singh Chamkila: Amar Singh(21 July 1960 – 8 March 1988), commonly known by his stage name Amar Singh Chamkila, was a popular Punjabi singer, songwriter, musician, and composer.
21 July 1960