In Japan, some companies would make medal redemption games with hardware they have on stock that they want to get rid of. For example, Konami is known for their SCC chip used in their MSX games, but they used it outside of the MSX in some occasions like Hexion. You can find plenty of videos on these machines on jewtube and niconico, https://yewtu.be/watch?v=llyuAsOAwNM
(even shows where the song I linked plays).
The third one was from a game called Witch, which was developed by the same team behind the Battle Mania games on the Genesis. The music is pretty good despite how short they are. The game was kinda addicting to play, especially if you enable the infinite time cheat and played the game like janky video pinball.