Quoted from the Huffington Post article:
"I Twittered I was with Justin Bieber and some kids were mad at me..." Pentz said. "I was telling some other producers in the EDM world and they were like, `Man, I can't go in the studio with Justin Bieber. My fans would leave me.' I'm like, `What? (Expletive) your fans.' I don't do it for the fans, I do it for myself. If they want to go or whatever and find something new, that's cool. You've got to believe in your music first of all. If you're going to be a slave to your genre or your fans, that's a death sentence, you know?"
Read the rest of the article here.