【Bandcamp friday today！】 Boris "hrpreproduction" 2002年にリリースされた　Heavy Rocksのプリプロ音源を発掘、アーカイブリリース Heavy Rocks, released in 2002. Right before that recording session, pre-production audio tracks built in the rehearsal studio were unearthed. While the included tracks were all present and the core structures and arrangements were progressing toward completion, some songs still had unfinished lyrics, and the tracklist was not yet finalized. Key elements throughout differ from the final studio album. Combined with the unique analog tape compression that solidified the album's soundscape and a raw, gritty sonic texture, this document conveys the vivid intensity of the eve before Heavy Rocks was completed. In contrast to the rich variety of the studio album with its diverse lineup of guests, here sounds the raw Heavy Rocks of the three members.