Primer 55 and Smile Empty Soul

Formed in Memphis in 1997, Primer 55 is a rock band blending heavy metal and hip-hop. Co-founded by guitarist Bobby Burns and vocalist J-Sin, they gained an underground following before releasing their self-titled debut in 1999 and signing with Island Def Jam. Their 2000 album Introduction to Mayhem featured collaborations with Chris Kilmore and MCUD, cementing their status in hard rock.

Smile Empty Soul is a Los Angeles hard rock band formed in the late 1990s. Signed a major label deal in 2003 and released a self-titled debut album, earning a gold record after three successful singles/videos. Known for constant touring.