I'll check out the video later, but I did read some of the posts...so I have a clue. I was born in 58, so I was 15 in 73 and 20 in 78. I was very much into the Beatles when I was 10 in 1968, then I got into much heavier music, Grand Funk, Black Sabbath and my favorite....MOUNTAIN. Then Led Zep happened and a bunch of others. I will likely know everything except some of the disco although I'll probably have heard them and may not know who it was by. In 1977 I was in my first real band, we played in a lot of small NYC clubs and some smaller discos were already closing so we played under lots of disco balls in some of those clubs. Our first song started with a disco beat and then we all stopped, screamed out "we hate disco" and launched into our first loud hard rock song!!! It was fun!!!!