A Comments note from Ken Nielsen in Oz asks where to start with Korngold. Here we go:
START with the films - Adventures of Robin Hood, The Sea Hawk, The Private Lives of Elizabeth and Essex, Deception. You'll probably find you've heard them before, somewhere in your distant past. Next, the Violin Concerto is the best-known orchestral piece: try Gil Shaham with the LSO and Andre Previn. Happy? Now for his best opera, Die tote Stadt, in the recording by Erich Leinsdorf (don't bother with el cheapo Naxos, recorded live in Sweden complete with stage clonkings and swingeing cuts). If you get along with that, move on to Das Wunder der Heliane, the most ambitious of the operas and the work he regarded as his masterpiece - and turn the volume up high! If you can swallow Heliane, you are truly a Korngold person...
In which case, you can gorge happily on all those beautiful but underplayed orchestral works like the Sinfonietta, the Abschiedlieder, the Symphony in F sharp, the Cello Concerto (here with hot young cellist Zuill Bailey), and the Piano Concerto for the left hand (with the glorious Marc-Andre Hamelin); and the songs, gloriously sung by Anne Sofie von Otter (this recording also features some of the chamber music, which is interesting, but not really the best place to begin).
Er, Ken, do I take it you've read my book already? If not, here's the Amazon link...