The pair recently collaborated on hit single 'Where Are Ü Now' and while they got on well in the studio he admitted he doesn't think the 21-year-old star is always the nicest of characters.
He explained: ''Bieber's personal life is whatever it is -- he's a rich kid and he's pretty much gonna have to be a jerk. But he's respectful to me, and he has that weird gene where he's good at everything: better at basketball than me, better at drums. For us it's more like an art project where you utilize his voice.''
Although the 36-year-old producer and DJ made a mainstream song with the 'Boyfriend' hitmaker, he went on to reveal he has been working on a more rockier sound recently with Vampire Weekend frontman Ezra Koenig and has been ''harassing Haim'' because he's so keen to collaborate with them.
He told Rolling Stone magazine: ''I've done a lot of songs with Ezra Koenig, some really cool stuff that I hope people get to hear. We wrote a couple of things for another artist that might be huge records for the end of summer -- one of them started with a Vampire Weekend idea. But he's not traditional rock -- he's like me, a hodgepodge of styles and influences. And I have a studio with [producer] Ariel Rechtshaid, so every day I'm harassing Haim to listen to my beats. But I don't make anything that they ever like [laughs]!''
Nobody is impressed by Demi "coming to the rescue".
Let's leave gatekeeping in 2020.
These are the albums we're looking forward to most this month.
David Bowie poses difficult questions about lack of racial diversity on MTV.
As Gal Gadot's Wonder Woman 1984 seems to be everywhere at the moment we thought we'd take a look back at the wonder women of music back in 1984.
Taylor Momsen radiates some seriously ethereal beauty in the video for The Pretty Reckless' latest single '25'.
The 2020 pop masterpieces that we've had on repeat.