Pharrell is featured in his Billionaire Boys Club / Ice Cream clothing line’s 2010 Spring/Summer collection “Classic Americana” look book.

Pharrell is featured in his Billionaire Boys Club / Ice Cream clothing line’s 2010 Spring/Summer collection “Classic Americana” look book.

With so much attention being given to rappers who sing and the raging debate on whether singing is “hip-hop” we decided to ask: who are hip-hop’s best singers?