"Brass Knuckles is a musical project formed in 2007 by American producers Nate Hills, Ian Kirkpatrick, and Jimmy Valance. The group's name is inspired by a type of American knuckle duster. The group is best known for their single "Till I'm Gone", which topped the Billboard Dance Club Songs chart in 2010. The song was also a success in the UK top 40, peaking at number 37 on the UK Singles Chart. John Ryan is an American singer, songwriter, and record producer. He is best known for his work with pop rock band OneRepublic, with whom he has co-written and produced several hits, including the band's first single "Apologize" and the worldwide hit "Counting Stars"."

Brass Knuckles ft John Ryan - As Long As Im Alive (Cold Blank Remix) Extract :