Music you possibly, maybe, will not hear anyplace else, though there’s always the chance that you might.
Lee Hartsfeld collects great pieces of rare music, sounds and other collectible audio. MP3s stay online for a little while, then go offline again. Great stuff – I particularly recommend to check out HAL’s Father…
[a long time ago via Boing Boing](more on speech synthesis can be found on wikipedia, like, right here.)