The good news is that Crumb continues to write for the piano, his most recent and interesting are the two book opus written from 2015-2020, a grand and richly detailed solo work entitled Metamorphosis, Twenty Fantasy Pieces (after Celebrated Paintings) for Amplified Piano. We are fortunate that the entire work has been nicely recorded, as sympathetically performed by pianist Marc Antonio Barone (Bridge 9551).
All of the hallmark technical innovations of the earlier piano works continue to get attention here, along with little vocalisms and atmospheric percussion punctuations both on the piano and articulated on small ancillary percussion instruments as played by the pianist in the course of the work.
Each movement is a musical analogue of a special, usually well known painting, mostly stemming from the Modern period. So we get one or more movements for various paintings by Whistler, van Gogh, Klee, Chagall, Johns, Gauguin, Dali, Kandinsky,, Andrew Wyeth, Dinnerstein, Picasso, O'Keeffe.
The performances are excellent, the music everything you might expect from Crumb and the piano solo genre he has perfected, only a step further into the future present. Grab it and enjoy. It is a wonderful addition to the Crumb oeuvre.