This hub page at the web blog "Passport to Dreams Old & New" gathers up all of this site's published content covering the topic of music heard and played in the Disney Theme Parks. The specific focus and specialty of this site is vintage, pre-millenium music of Magic Kingdom.
It was last updated on May 26, 2016.
If you are interested in the old-time music of the Vacation Kingdom, a great place to start is this own site's Another Musical Souvenir of walt Disney World, which compiles hours of retro park music into an entire "day" trip to the Walt Disney World of old.
A Brief Introduction to Early Walt Disney World Music
Magic Kingdom Area Music
Main Street USA (1976 - 1991) (Morning)
Main Street USA (1976 - 1991) (Evening)
The Original Main Street USA Music
The Adventureland Veranda (1971 and 1977 - 1993)
The Jungle Cruise / AWOL Airwaves (1991 - )
Liberty Square (1971 - 1980)
Liberty Square (1980 - 2010)
Tomorrowland Concourse (1972 - 1983)
WEDway Peoplemover (1976 - 1993)
Tomorrowland Concourse (1983 - 1990)
Tomorrowland Concourse (1990 - 1993) (1994 - 2003)
Disneyland Area Music
The Matterhorn Bobsleds (1978 - 2009)
Specific Case Studies
The Music of Country Bear Jamboree: Part One - definition of the show's genre, who recorded the music, and the first part of the show. May 2013.
The Music of Country Bear Jamboree: Part Two - the second half of the show, and a personal reflection on its appeal. May 2013.
The Music of Country Bear Jamboree: Part Three - two deleted songs. June 2013.
Other Disney Park BGM Resources:
Walt Disney World Resort Music Compendium
Disneyland Resort Music Compendium - Michael Sweeney has helped out with a great deal of the playlists on this site, and he's put online dozens of carefully curated, extremely accurate playlists of music heard inside the parks.
MouseBits - Features a lively discussion community with numerous playlists, and a torrent seeding resource for a great number of of the commonly circulated pieces of Disney music.
Magic Music - Another discussion forum, this one featuring yet more playlists with a focus on current music and many impressive compilations by site owner Jay.
Tokyo Disneyland BGM Lists - Star Orion has migrated their Wikia site to this slickly designed page, which is easy to navigate even if one does not read Japanese.
Disney Chris Audio - Chris Lyndon spends an enormous amount of time polishing and perfecting the tracks in his Disneyland Tour, which is so extensive I can't think of something he doesn't have available for listening on his site by now.
Yeah Disney Audios - Tumblr blog that maintains download links for a lot of theme park material including loops and attraction soundtracks.