Also known as Sunny Day Real Estate. This was a demo-tape released in 1992, when they were on shaky ground with their band name. Also, this was before Jeremy Enigk (future frontman of SDRE) joined the band, so the vocals are considerably different.
Demo '92 also draws more from SDRE's grunge/hardcore influences. This was also changed in favor of what is now known as "genuine" emo when Jeremy Enigk joined the band. A change for the better? That's up to you to decide. (The answer is yes, but Chewbacca Kaboom is still fucking awesome)