Psychologist Cecil A. Stokes invented Auroratone films in the 1940s, using chemistry and polarized light to create soothing abstract music videos. The visuals, reminiscent of the Aurora Borealis, were set to popular songs of the time, including Bing Crosby’s “Oh Promise Me.” These films were found to have a therapeutic effect on traumatized WWII veterans, providing relaxation and emotional release. Other patients, including those with mental disorders or chronic migraines, also benefited from the calming effects of Auroratones. The films were screened in department stores and churches, but not everyone was impressed, as the Guggenheim Museum rejected the idea. Only one Auroratone film is known to have survived, but you can create a similar experience by using certain songs with a visualizer on your computer or device.
https://www.openculture.com/2023/11/watch-an-auroratone-a-psychedelic-1940s-film.html