There are two artists using the name Knife Fight (1) Knife Fight was a fast hardcore band from Southern California. None of the other KF's ever put anything out, so they don't count. Never one to shy away from wearing their influences on their sleeves, you can hear heisted riffs and lyrics from bands such as Negative Approach, America's Hardcore, Straight Ahead, Rudimentary Peni, Voorhees/Shark Attack/F.U.'s/Deathreat, Battalion of Saints, and apparantly Lack Of Interest. But that's only 7 songs out of like 40.
Desaparecidos was a short-lived American quintet formed in 2001 in Omaha, Nebraska, fronted by Conor Oberst (vocals, guitar) and featuring Denver Dalley, now of Statistics (guitar), Landon Hedges, now of Little Brazil (bass), Ian McElroy (keyboards), and Matt Baum (drums). This project however was restarted in 2010. Oberst may be better known for his confessional songwriting and storytelling as the lead singer of the popular indie folk band Bright Eyes, but Desaparecidos has a very different flavor.