I'm totally in love with this band and have been obsessively watching their youtube videos. Basically, they're covering modern pop songs, but they do it in a specific era's music. So, this one (which is the first one I saw), is Sweet Child O'Mine done as NOLA blues/jazz:
They also have their new album on Spotify. I don't like the full album as much, b/c it doesn't seem to be as diversified a sound as they could've chosen. But the musicianship is amazing.