Sometimes it’s vexing when a new band’s press kit tells you what other bands they sound like. As a reviewer, this means you’re not able to listen to the music without prejudice. You’re going to compare the newer artist to the bands that their press agent just told you they sound like. In this case, we’re informed from the outset that we’ll like Oregon’s Supplemental Pills if we like Spacemen 3, The Velvet Underground, and The Brian Jonestown Massacre. I am delighted to report that Supplemental Pills does in fact sound like those bands, but takes those influences and melds them together into something new. They are less derivative than…