Since the new Tenacious D album hasn't actually been released yet, I don't have a song to upload for you guys. But, I do have a link for you to watch the new music video for their song "Roadie" right here, featuring Danny McBride. You should check it out, it's pretty awesome.
You can definitely see a difference in lyrics between that new song and this old one of theirs. Whereas "Master Exploder" has really simple lines that are easy to follow and pretty explicit cursing, "Roadie" is much more meaningful and emotional, trying to tell the true struggle of rock's most unsung heroes. I would definitely say that the lyrics on the new album are more meaningful, instead of just going for the big laughs like they used to. "Master Exploder" also shows how badass the acoustic guitar can be from these guys.