All American Patriotic Music: Patriotic MIDI music files, wav sounds, MP3s: marches, patriotic, and military songs.
Armenian Patriotic Songs: MIDI files of the melodies and GIF files of the lyrics in the Armenian alphabet.
ATU - Showtune Midis: Dozens of selected MIDI files from various plays and musicals.
Disney MIDI: Music from almost every song of almost every Disney movie.
Jack's MIDI Music: American traditional and patriotic songs.
Jordan O'Connell Memorial Celtic MIDI Archive: Traditional arrangements.
KHS National Anthems Page: Texts and music for patriotic songs of the German-speaking countries.
MIDIversidad: Spanish/English. Star Wars, Robotech, Popular, Latin music, movies and TV.
Movie and TV MIDI Files: Quality archive and some self-sequenced MIDI, mostly Science Fiction themes. Fill-in-the-blanks beginners' MIDI sequencing exercise with answer file.
Songs of the Union: Civil War songs and lyrics.
The Great Midi Page: Though not as great as it says, this page has some of the recent songs and lots of television and movie MIDI files.
The John Williams MIDI Page: Many files from the work of this film music composer.
The Movie Music Page: MIDI main themes for several movies.
The Musical World of Rocky Horror MIDIs: Everything audio related to The Rocky Horror Picture Show. Includes over a gigabyte of MIDI and other sound files.
The Star Trek MIDI page: Large archive of Star Trek related MIDI files, more than 100 altogether; all main titles, many songs of Vic Fontaine and a mailing list.