Why are some of katy perry's fans are coming here and trying to discredit bruno's achievement. He co-wrote & co-produced every song he was featured on, nothin on you & billionaire were his original tracks, the rappers on these two songs were replaceable, actually nothin on you was meant for lupe fiasco at first, he had a part in the success of these features & people remember his verses more than the rapping part, you can make a thread for katy when she gets her 9th 3M seller & you can brag about it as much as you want.
lol, I wasn't refering to her writing skills. I wanted to emhazise Bruno is involved in every part of creating a song. It's rare these days and needs to be taken into account. He's credited for all these songs IVY mentioned so stay seethe if you like.