The creator of EDM group Major Lazer told Rolling Stone he has recorded "a lot of songs" with Koenig, and the pair has also been writing tracks together for other artists, according to NME.com.
Diplo says, "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."
The producer is also hoping to extend his rock credentials by working with sibling trio Haim, adding, "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."