Smoke on the Water: Tribute to Deep Purple - Deep Purple

OK, I realize that it's not technically a Deep Purple album, but putting it anywhere else except in "Deep Purple" in my collection didn't seem right. I also realize that it's not in order of release, but for some reason I have a hard time listing tribute albums in with a band's regular albums. Anyway, it's an OK tribute. I bought it at the time because it had former Purple & Sabbath singer Glenn Hughes singing on it.