I've got most of the classic and new songs that I’m looking for in the net, not on other site but easy to find on youtube. Sometimes if I remember some songs that I like to sing or listen, youtube is an automatic site that I can think of. It searchable, I can see the fantastic quality of videos or sometimes I like it when it has lyrics on the clip. I also get to download the songs and and my husband convert to an mp3 for a collection in my usb to use in the car. My husband use the best youtube video downloader for some clips or songs we like and also I just copy him because everytime I saw him in the net he was there sitting and downloading his video clip collections.
So yes, the best to recommend video downloader is from Youtube, don't forget it.