Oh man, introducing people to The Gizzverse is so much fun. They have 25ish records and like most prog rock bands they're less about individual songs and more about whole albums. This website is a pretty decent guide to getting into them, or this reddit post has a nice flow chart you can follow. Personally I love Infest the Rats' Nest and Nonagon Infinity. The latter is 9 tracks designed to be played on loop without a clear stop or end point