In reply to China.

Jay-Z had previously worked with Timbaland and Pharell before he started working with Kanye intensively. Jay-Z makes his own raps, you can't take that away from him, he knows how to lay his lyrics on the music - whatever the music is (hip-hop, rock, pop, soul) - and make the swagu. A lot of rappers can't do that, that's why they fail to sell after their prime *NAS*.

He gets credits for signing Rihanna because at that time he was the boss at DefJam and later he signed her on RocNation in order to help her manage her celebrity and make the most of it. And it shows.

However, DefJam is still in charge of Rihanna's discography. So I can agree that, for instance, Bu Thiam the current boss of DefJam is not getting enough credit for the LOUD album.