For more Fresh Punjabi videos subscribe br Official Teaserbr Song - Knock Knockbr SingerComposer - Mr.Abr Starring - Mr.A & ITS SIMARbr MusicLyricsRap - ITS SIMARbr Mix Mastered - B-Sanj MK Studiobr Video - TOYSbr Directors - Sarabjeet Sohal, Amarinder Aryabr Production - Neeraj Bhattbr Label - Lokdhunbr br Social Links:br Mr.