Olivia Newton-John, ELO - Xanadu (RaRCS, by DcsabaS, 1980)

“RaRCS“ stands for “Record and Record Combined Stereo“, which means that the left and the right sides of the video come from two different studio records. Regarding the current video, you can see “Xanadu“ by Olivia Newton-John: on the left side the original movie film version (Xanadu (1980)), while on the right side the official promo movie clip version. The singing, the music, and the choreography are identical after the first few seconds and before the last minute. But the movie version (left side) has some further sound effects. Links: