Billy Marchiafava (also known online as Billyisterrible) is an independent singer, rapper, and entertainer based out of Chicago. He is widely recognized for his high-energy fusion of modern trap beats, hip-hop, and humorous "meme rap" melodies. He first began gaining widespread traction online in mid-2018 across various platforms like TikTok, Facebook, Instagram, and YouTube.

His viral success quickly translated to the stage. In 2019, Marchiafava launched his touring career by opening for major internet-based artists such as Yung Gravy, bbno$, and Yung Bae. As well as opening for Hoodie Allen, Schoochie Boochie, Oliver Francis, Bone Thugs & Harmony and Shotgun Willy,

A turning point came when he formed a long-standing creative partnership with his producer and DJ, Roy Alfonso. Following the massive success of their viral track "Stewart Little" and Marchiafava’s album Mainstream Meme 2, the duo began working together almost exclusively on music, videos, and live performances. This collaboration ultimately propelled Marchiafava to embark on his first national headline tour in 2023.

Now, nearly a decade into his career, Marchiafava continues to find innovative ways to captivate new audiences and deepen his footprint in the music industry. Today, it is nearly impossible to mention the comedy rap scene without hearing his name, as his distinct humor and style continue to cut through the noise and drive him forward