There are several Dinosaur Jr recordings, two from the late 80s / early 90s, of which this is the best one: https://archive.org/details/ajc02597_dinosaur-jr-1993-04-10 The other has the better set list (IMHO!) but unfortunately a very "thin" recording with only mids.

No Pixies, but The Amps have one appearance: https://archive.org/details/ajc02207_amps1995-10-31 The performance is ... "uneven"

And four stunning Guided by Voices sets, of which the best is https://archive.org/details/ajc00711_gbv-1999-12-10/GBV1999-...

> Tracy Chapman: https://archive.org/details/@aadam_jacobs_collection?and[]=c...

> Audio quality is decent here too. Listening to "Fast Car" now, and the quality is solid. :)

Fast Car was terrific, thanks for sharing! It is especially amazing considering this recording was made in 1988, just one month and one day (how poetic!) after Fast Car was released as a single.

It is an utterly amazing collection, although not the era I am the most familiar with. However, let me add a few as I love your initiative and went through them all and skimmed the ones below to get a sense of the quality.

Billy Bragg:

* https://archive.org/details/ajc02362_bbragg1986-12-04.ajcpro...

* https://archive.org/details/ajc02359_bbragg1988-05-06.ajcpro...

Not the cleanest vocals on either of the recordings, but the former is overall higher quality from what I could tell.

Boogie Down Productions:

* https://archive.org/details/ajc02338_bdp1988-05-18

Excellent recording and great live act, just a pity that it is rather short.

Mojo Nixon:

* https://archive.org/details/ajc02226_mojonixon-skidroper1987...

Another great live act and recording. I am sure Mojo would very much approve of this being shared as well.