He's been doing this for a while, and has a whole portfolio of songs, so I thought I'd post another one to give you an even further sense. This is a parody of the song, "Those Were the Good Old Days," from the musical Damn Yankees, with a score by Richard Adler and Jerry Ross. I always thinks it helps a parody when you know what it's parodying, so if you don't already know the original song, here it is -- with Ray Walston as The Devil wistfully reminiscing of better (or rather, worse...) times.
And here is Randy Rainbow's parody. Once again, he has an especially-elaborate production to support his song. Whereas yesterday's piece may be a better all-around video, there's something about this parody that I think I enjoy even more. Besides which, the comic timing is wonderful, aAnd there's a joke at the 1:45 mark that I find a hoot, all the more so for its subtlety.)