Lizzardbrain (born Jack Walker Simpson) is a music producer, musician and songwriter from Nashville, Tennessee. 
 He is recognized for his unique blend of genres across his production including influences in Underground Hip-Hop, Hardcore, and Deep House. 
 He moved to Murfreesboro, Tennessee to begin producing Hip-Hop music and attend Middle Tennessee State University’s audio production program in 2015. 
 After releasing various singles on soundcloud for a few years, He released his debut album “Hazzardous Material” in 2019 and followed it up with “When This Kind Of Fire Starts...” in 2021.