Yesterday, I linked you to Billy Joel's music video for his big hit, "For the Longest Time." It's inspired a lot of cover recordings and many of them are…well, I don't know quite what you call them. They're videos where one or two guys sing four-part harmony with themselves. Here's one I featured here before in 2014. It's a gent named Julien Neel, who has dozens of these online featuring just himself, teaming up with Sgt. Sonny, who also has dozens of these online of just him vocalizing with himself… The song is Billy Joel's "For the Longest Time"…