"I did a record for Beyoncé. It ended up being on Dream's album, but I did a record for Beyoncé," he said, speaking of the song "Turnt" from The Dream's 2013 album IV Play. "She asked me to change it, but the way she asked me made me really realize why she's in the position that she's in and the whole diva thing, and I just had mad respect for her."
http://www.mtv.com/news/articles/1714072/2-chainz-boats-ii-me-time-collaborations.jhtml