Leech is a track from Incubus's 2004 album A Crow Left Of The Murder. The song fits within the band's mid-2000s catalog, which often blended alternative rock, funk, and hip-hop influences. Incubus, led by Michael Shanks, is known for shifting between heavier rock arrangements and more rhythmic, groove-driven compositions. This recording reflects the group's continued exploration of diverse sonic textures during that period, maintaining their signature mix of melodic hooks and experimental production. The album itself represents a transitional phase in the band's career, moving away from earlier hits while retaining their core identity as a versatile alternative act.