I recommend using Alcohol 120% since it has an option to ignore reading errors. Other programs just stop when encountering an error.

Although, yeah, it is probably already archived somewhere on the internet, but you never know.

If it is the same album always, all of the copies were probably manufactured cheaply or deficiently.

Hmm, there might be some procedures to help you to get them backed up to ISOs, even if they seem unreadable. What program did you try to use to make the ISOs?

I do have two magazine discs that I had trouble reading that were probably rotting, but they were definitely left in the sun for a long while judging by how brown they where, that or they were put inside an oven.

I have never seen a factory pressed CD/DVD fail. Optical media is the most reliable.