Angelo Van Terra, born Dominick Charles Angelo Duff, is an American rapper/singer-songwriter and producer from Indianapolis, IN. Along with collegiate knowledge of audio production from Ball State University in Muncie, Indiana, Terra is a self taught musician who developed his skill and style with influences from Evanescence, Lauryn Hill, Kanye West, and Nora Jones. Heartknock Music features a mixed style of PBR&B (or hipster R&B), progressive rock, and hip-hop/rap music as Terra sings, raps, and orchestrates his way through an internal fight between himself, his demons, God, and a mysterious muse introduced in track number two, Sonja. While writing and recording, Terra drew inspiration from the albums The Open Door (by Evanescence) and The Miseducation Of Lauryn Hill (by Lauryn Hill), particularly referencing Hill's style of seamlessly moving between singing and rapping and the way both of these albums incorporate progressive instrumentation when there are no vocals present.