After watching the Training Video for Mickey Mouse, which uses a modified version of "Mickey Mouse Birthday Parade" at the end. It made me think for a moment about the parks then and now. There's something about old school parade music for Disneyland and WDW between the 1970s and early to mid 80's that had a certain charm that's difficult to describe. Parade music from that era was more laid back, relaxing, inviting, and a bit energetic (not to the level of bombastic as modern music for the parade).
The best example is the soundtrack for Mickey's 50th Birthday Parade from 1978, most of DL and WDW parades from the 80s, and Mickey's 60th Birthday Parade.
Mickey Our Hero Parade 1984
Mickey's 60th Birthday Parade 1988
That's the best I can describe Disneyland and WDW parade music from then and now. Feel free for anybody who grew up in that era to chime in for a more detailed explanation for what I'm thinking.
@TP2000 might find this interesting.
DisneyChris.com which has been active since 2013, deserves more credit on this site. His website contains so much archive audio from Disney's past attractions, shows, and parades. It's the only website where you get to hear actual soundtracks for Disneyland's older parades and tries to find audio with the best audio quality.
This page is dedicated entirely for DL's parades. DisneyChris is also a co-host on the podcast
"Jiminy Crickets! Podcast".