L. v. Beethoven, Piano Sonata No. 29 (orch. Weingartner), Symphony #5, Prometheus Overture, Weingartner (Naxos 8.110913)
Though certainly symphonic in length, op. 106 does not seem to be particularly suited to such treatment, and the very notion defies all our sensibilities of Werktreue. Still, it's a curious and curious-making monument of Weingartner's admiration of Beethoven. I am not sure if it reveals much new about the work, and I am certain that it sounds better on the piano. Charles Rosen thought it "silly." The 1930s sound, remastered by Mark Obert-Thorn, is restricted and full of hiss (though listenable). The Prometheus Overture and 5th Symphony (1933) feature the LPO in a bad accoustic and are not even Weingartner's best recordings thereof. Still, it's "interesting" in the more flattering meaning of the word for hearing the Hammerklavier strung up... at least for the very, very curious of us.