Chris Martin gave Queen Latifah a €133,960.27 piano - but she didn't know who he was.

The Coldplay frontman sat next to the 45-year-old rapper at Alicia Keys' Black Ball charity auction and they decided to bid together on the custom-made instrument used by the host on 'Empire State of Mind', her 2009 collaboration with Jay Z.

Queen Latifah recalled on 'Jimmy Kimmel Live': "I sit next to this white guy, I don't know this guy. But he seems cool, like, he seems chill. And so, he looks like, 'Yo, you wanna get this piano?' I'm like, 'Yeah, let's start bidding!'