Souls of Mischief is a hip-hop group from Oakland, California, that is also part of the hip-hop collective Hieroglyphics. The Souls of Mischief formed in 1991 and is composed of rappers A-Plus, Opio, Phesto, and Tajai. East Oakland native Tajai began rhyming with future bandmate A-Plus at age 8, while both were in elementary school. Tajai and Phesto met later in junior high school. Tajai recruited his best friend Phesto in middle school and A-Plus brought Opio into the budding act in high school before making its major-label debut on Jive Records with the group's well-received album 93 'til Infinity, in 1993.