Unitron
Typically, demos are rarely seen as including some of a band's best material. This isn't always because of the band finding their sound and just starting out though, many times it is the terrible production on many demos that keep them from being very enjoyable. Snapcase's self-titled demo from 1991 is an exception, as this houses some of the band's best stuff.
Before switching to their own unique take on hardcore in the late 90's and early 2000's, the band was a lot more thrash-based. Perhaps nothing displays that better than this demo, as this is an onslaught of punishing beat-you-to-the-floor crossover thrash. "Die Laughing" is the best song on here, with a machine gun barrage of double bass that drum into your skull. The guitar riffs shred and proceed to punch you in the gut, and Chris Galas's vocal spitfire has all the attitude and strained screams of classic hardcore/crossover fashion.
The bass work gets its glory in "Undertow", which is given a menacing tone with the production that blends perfectly with the rusty distortion of some of the riffs. The production is raw and crushing, but you can hear every instrument and vocal line incredibly well. It sounds like a well produced studio album, and that's impressive, especially for a first demo.
If you're looking for some crushing underground crossover thrash to get you through the daily grind, give a listen to this fantastic demo. A great start to one of the most underrated bands in hardcore. Hope you found this review helpful, feel free to comment!