Does an operetta like “Evita” count? How about filmed version of operas?
Does “Silent Movie” count?
Do silent movies count? If this is true then I can think of many much more mainstream movies with no spoken dialogue. “Metropolis”, “Nosferatu”, lots of Chaplin, Laurel and Hardy etc. Orders of magnitude more people have seen those than have even heard of “Koyaaniqatsi”.
If Evita counts then I believe the 2004 film version of The Phantom Of The Opera does too, I don’t think there was any spoken dialogue.
Edit: now that I think of it there was. Pretty much the entire audio from the film - including the bits of dialogue - is replicated on the double-disc soundtrack, which is why I misremembered that it was all music.
Silent Movie has one line of dialog, so it’s disqualified.
Modern Times and City Lights were released during the sound era, but have no dialog.
Though it’s a silent film, in its original version, The Last Laugh tells its story entirely without title cards (one was added after the studio insisted on a different ending). I think that’s in keeping with the spirit of the question.
Drawing Restraint 9 comes pretty close. There is a short scene with a tea ceremony that might have a few lines, but pretty much the whole movie is just a really long Bjork video with no breaking of the fourth wall.
Probably not seen much outside Australia and New Zealand One Night the Moon featuring Paul Kelly, his wife and daughter with songs by Kelly, Kev Carmody and Mairead Hannan, is a kind of 60 minute opera about a girl lost in the desert.
I mentioned Le Dernier Combat in the other thread, because I think it’s got no music. Regardless of that, it has even less dialogue than Silent Movie. A French Science Fiction film that needs no subtitles. If it has music, despite my recollection, then it can still fit in this thread.