Nightingale (1992)

NR | Oct 04, 1992 (US) | Animation | 00:30

http://www.michaelspornanimation.com/SourceFiles/Credits/Nightingale/Nightingale.html

Captivated by its sweet song, an emperor takes a nightingale into his palace as his companion. But when the emperor shows more interest in a bejeweled mechanical bird, the nightingale flees. It returns only when the lonely emperor sees how foolishly he has behaved.