Swedish dance music superstar Avicii has recruited Chris Martin, Billie Joe Armstrong and Jon Bon Jovi, among other big names for his next album.
The follow-up to last year's (13) True will also feature a duet between Wyclef Jean and Matisyahu.
And, teaming up with Coldplay star Martin has been beneficial for Avicii's health - he has been giving the DJ/producer nutrition tips after he was forced to cancel his appearance at the Ultra Festival in Miami, Florida in March (14) due to exhaustion.
He explains, "Chris has been like a brother and helps out with my nutritionist. I find it hard to gain weight, so I drink shakes in the morning."