Singles: Original Motion Picture Soundtrack

Acoustic rock is a style of rock music built primarily around acoustic instruments—especially steel‑string acoustic guitars—while retaining rock’s song forms, rhythmic drive, and hook‑oriented choruses. Compared with folk or traditional singer‑songwriter material, acoustic rock tends to use stronger backbeats (often played with light drums or hand percussion), more prominent bass movement, and dynamic, chorus‑centric arrangements. The result is a warm, wood‑toned timbre with the energy and structures of rock, but without the distortion and heaviness typical of electric guitar‑led styles. The genre spans intimate solo performances to full‑band “unplugged” settings, often featuring strummed open chords, fingerstyle passages, vocal harmonies, and occasional alternate tunings or capo use to shape color and register.

Proto-metal is the late-1960s hard, heavy strain of rock that crystallized the sonic vocabulary later codified as heavy metal. It bridges blues-rock, garage rock, and psychedelic rock with louder amplification, thicker distortion, and riff‑centric songwriting. Musically, proto-metal emphasizes power-trio or organ/guitar lineups, pentatonic/blues-derived riffs, power chords, and aggressive, often fuzz-saturated tones. Vocals can range from soulful shouts to theatrical wails, and rhythms often push straight 4/4 grooves at mid-to-up tempo with a palpable sense of weight and drive. Historically, it includes bands whose heaviest work predated metal as a named genre, as well as early albums by future metal standard-bearers. Its sound laid the groundwork for the timbre, riff language, and attitude of heavy metal and, by extension, numerous metal subgenres.