Bruno Mars thinks Adele is ''the coolest'' person.

The 31-year-old singer has worked with a number of big names in the music industry including Alicia Keys and CeeLo Green, but the 'Just The Way You Are' hitmaker has said he would consider the 29-year-old singer - with whom he co-wrote the song 'All I Ask' for Adele's '25' LP - ''the best'', as they ''inspire each other'' when they work together.

Speaking to Jamie Theakston and Emma Bunton on UK radio station Heart on Thursday (03.11.16), Bruno said of the 'Hello' hitmaker: ''She's the best, the coolest. Funny, and she knows exactly what she wants, which is everything you hope for when you collaborate. It's very hard to... when you're in a collaboration situation, you want someone to bring something to the table. It's very important that you inspire each other. So when Adele walks in the room, she tells you, 'This is what I wanna do, this is how I want it to sound.' She starts singing, and this world opens up and everyone gets excited in the room because she just has this incredible voice. So, it was very old school, we were around the piano and all, and I was playing some stuff until she got excited, and I hit a couple of chords and she said 'What's that?' And that was it! And then we're off to the races, and it's who can come up with the best line and top each other's melody, and we did this song and I'm very proud of it.''

And the '24k Magic' singer says the pair still keep in touch, even after having finished working together.

He added: ''[We talk] all the time. FaceTiming, the whole thing.''

The news comes after Bruno recently described the 'Someone Like You' singer as a ''diva''.

He said previously: ''She walks into the studio she's got all this attitude, she's a diva, she's like, 'I don't want to do this. I don't like that...'

''And then as soon as we uh hit a couple chords that she liked, we started rolling, and that's where we got that song from.''