saw your tags on the special interest thing. do teach me about the soundtrack of sonic cd and its many fascinating production oddities...
YOU GOT IT BOSS o7
as most people know sonic cd has two [almost] entirely separate soundtracks - the original, used for the japanese and pal region releases, and a different one made for the american release. the jp soundtrack is your typical upbeat early sonic fare, with added flair and lots of fun sound samples thanks to cd audio quality, while the us one replaces most of that with super grungy and more atmospheric tracks. i'm not sure if there's ever been an official source on why the entire soundtrack was swapped out, and i'm too tired to check lmao [there are no sources for this post. it's all dude trust me], but the prevailing theory is that the localisation team thought that americans wouldn't care for the playful and energetic original soundtrack, since it was 1993 so everyone hated fun or something
the general consensus is that the jp ost is better and fits the gameplay more, and most future games to musically reference sonic cd use the japanese tracks as their basis [and the 2011 port of sonic cd defaults to the jp soundtrack no matter what region you're in, though it includes both versions and lets you swap soundtracks whenever], but the us soundtrack has its fans for its atmospheric style and uniqueness among sonic soundtracks. [personally i'm a huge sonic cd us soundtrack defender - tidal tempest present, all three metallic madness mixes, and the special stage theme are absolute hidden gems to me - but i do think it's weaker in the context of the game it's for by virtue of most of the good and bad future mixes not being tonally distinct enough from the present mix or from each other to immediately clue you in on which one you're in the way the jp songs do.]
okay now we've gotten the basics out of the way we can get to the fun stuff. my absolute favourite Sonic CD Music Fact is that for every stage's set of four tracks, the present, good future, and bad future mixes are stored as streamed audio, but the past mix is *always* sequenced music, relying entirely on the sega genesis' sound chip. when you send sonic back in time in the game, the music itself goes back in time with you by virtue of being both composed and played back with less powerful tools! isn't that cool?? they did meta stuff in their video game! in 1993!! they had the constraint to do that with the music on their game for the console addon that was all about better audio and video quality, over a decade before faux-retro caught on and most developers were willing to adhere to any limitations they weren't absolutely forced to by the hardware they were working with! they willingly kneecapped a quarter of their soundtrack for an incredibly small detail that most players at the time of release wouldn't understand and it STILL sounds good as fuck! it's so cool!!!!
the past tracks being sequenced is also why i say that the two soundtracks are *almost* entirely different - while replacing streamed audio is just a matter of composing a new track and swapping out the files, sequenced audio for a console like the sega genesis/cd is as much a programming task as a composing one. manually unravelling the old tracks, replacing any needed instruments and programming in new ones, sequencing all the new tracks properly, putting it all back together, and then testing to make sure that all that replaced code didn't accidentally fuck up anything somewhere else in the program would've taken more time than the localisation team had to get the game on american shelves. as a result, the past tracks in the us release are unchanged from their original versions, for better or for worse. as far as i know, no official past versions of the us soundtrack have ever surfaced, and we have no idea if any were even composed in the first place
lastly, both versions of the soundtrack had some form of physical album release in 1994, presumably independently of one another. the us version got sonic the hedgehog boom, which contained higher-quality extended versions of the cd soundtrack as well as a couple arrangements from spinball, whereas japan got sonic the hedgehog - remix, which true to its name was a remix album. i haven't fully listened to boom yet so i can't tell you if anything particularly interesting pops up in it, but remix is a REALLY cool listen! if you're listening for the sonic cd music it's pretty easy to pick out, but they get so creative with the original compositions now that they aren't constrained to seamless loops or fitting on the same disc as an entire video game that it's an entirely different experience. it's also just a really delightful microcosm of the sort of music that sonic tended towards early on, before sonic adventure made hard rock the standard lyrical genre and sonic generations gaslit us all into associating classic sonic with near-exclusively instrumental faux fm synth. i love you mid-90s classic sonic visual and musical aesthetic!!!!
