Greenfield III is a Northeast Pennsylvania (NEPA)-based power trio known for their self-described style of "Unbridled Psychedelic Power Trio Funk". The band blends electric funk, classic power-trio psychedelia, original riff rock, and wide-open, boundary-free live improvisation.

The group formed as a collaborative "super-power-trio" bringing together three of NEPA's most seasoned and exciting live musicians. Rather than sticking to rigid structures, Greenfield III treats their live sets like an open sonic conversation—listening, adapting, and responding to each other in real-time. Their sound leaves audiences with what they playfully call a "severe case of joyful stank face."