7. Bruno's been Tweeting about hanging out with Charlie King. Has he brought in the big guns? This image appears in the gallery:Bruno Mars' New Album: 12 Reasons We're SO Excited About His Return 7. 7. Bruno's been Tweeting about hanging out with Charlie King. Has he brought in the big guns? Just IMAGINE what this pair of superstars could come up with. 12 images See the full gallery: Bruno Mars' New Album: 12 Reasons We're SO Excited About His Return