2. Go to recordings and "Click Edit to edit the recording associations for this disc." for disc 1
3. Try changing the recording for track 1, 夜曲
4. Click the magnifying glass to do an inline search
5. Nothing is found
Switching to direct search does work, but why doesn't the indexed one "just work"?
A normal indexed search finds plenty of recordings: http://musicbrainz.org/search?query=%E5%A4%9C%E6%9B%B2&type=recording This includes two recordings by the correct artist, so I can't see what's wrong.