I think the reason the second one wouldn't play may be because it is one of those "auto-generated" Youtube videos that don't seem to play for everyone. I've posted some of those videos before, and others have told me that they were unable to play them. I don't know if it has to do with their setups, region/location, or what, but it's something I don't understand.
Yes, those might be considered some pretty unusual musical pieces. I like a wide variety of music, actually, but I am always on the lookout for things that are different. Those were actually from the 1990s (and I bought the albums with those songs on them a long time ago so they are nothing really new to me). The first and third videos were very progressive for when they were recorded. The second one (that you can't play) was a lesser-known artist who I saw in concert in the early '90s when he was traveling with DC Talk. That one wasn't too unusual (to me, anyway), just the standard pop fare that was popular at the time and probably would still be considered cheesy to the generation born years after me (I was born in 1973).
Anywho... I hope all is going well with you.
(BTW, I followed you, just so you know.)