These grunge songs were originally written for movie soundtracks, such as Cameron Crowe's 'Singles' and were either included on albums or left as singles.
You know the 'Big 4' from Seattle and likely some of the other grunge favorites, but these '90s grunge bands seem like they should have had a bigger career.
There have been cases in rock and metal history where the end of a band led to the formation of another, whether it was due to a break up or death and etc.