I played quite a bit of Reger in the days when I was forced to learn modern stuff (mainly for exams) alongside my usual renaissance, baroque and classical fare. Enjoyable stuff.
Just reminded me to dig out Rheinberger/Reger arrangement for two pianos of the Goldbergs. For non-fans of the Gouldberg versions this is the perfect antidote.
https://open.spotify.com/album/7xHdY82drUKmgh2xUgpyMI
The Aria is fairly conventional but it soon moves into its own world ...