| |||||||||||||||||||||
John William Feldmann (born June 29, 1967) is an American musician and producer. He has produced and co-written songs accounting for sales of more than 34 million albums worldwide—4 million alone from 2011 to 2014—and was also the lead singer/guitarist of the band Goldfinger.
He has co-written and produced a lot of songs by 5 Seconds of Summer.