Posted by Scott Sutherland on November 29, 1999 at 20:57:06:
In Reply to: Fantasia 2000 posted by Robert Coulter on November 26, 1999 at 11:33:29:
The session you were referring to was in the early 1980's with Tommy Johnson playing tuba. Apparently they were attempting to record the music again digitally to the old animation then rerelease the film, but this was extremely difficult because the original recording was not done to a click track and therefore the performance could not be reproduced exactly. Disney put an end to the sessions after a few days when it was clear they could not sync exactly with the old animation. I think this is why the new version has new animation, so that the animation could be completed after the music was recorded.
Hope this helps!