Industry Of Death is three IB13 songs told two or three times over: "Different Route" shows up in three versions, "Sector 13" in two, "Machine Language" in two, plus the title track that closes the record with no remix. For anyone building a set, that's not filler — it's the same idea served at different speeds, and that's where the record's real usefulness lives.
"Sector 13 (Prismal Remix)" opens up the set's possible range: 67 BPM, A minor, the slowest cut of the eight and the best one for easing into the booth without forcing the floor. Close behind is "Different Route (Accidental remix)" at 70 BPM in E minor, another atmospheric opener before the tempo climbs. Neither shares a key with the other, so moving between them calls for a bridge — another track or a long blend — rather than a straight mix.
For the peak-time stretch, the record offers three clear candidates: "Different Route (Original Mix)" at 138 BPM in Gb minor, the fastest of the bunch; "Industry of Death" at 133 in F major, the only track without a second version and the one that closes the album; and "Machine Language (Atibo Remix)" at 126 in E major, the gentler way into that block. Between those three there's a three-to-twelve BPM overlap, enough to chain them without jarring jumps, even though the keys don't line up cleanly — Gb minor to F major is a half-step apart, so it's worth routing through a track in between or leaning on EQ rather than a harmonic blend.
"Machine Language (Original Mix)" ends up as the wild card: at 83 BPM in A minor, it's the only version of that song built like an intro-outro, and it fits better at the close of a set than in the body of the record. Eight tracks, three ideas, and a tempo map that does most of the sequencing work for you.