No Substance? Really? You're the first person I've ever heard of that's a fan of that. Personally, I'd take anything before that album or anything from the three most recent albums before I'd listen to ANYTHING off No Substance.
I'm not sure exactly how they layer the tracks in the studio, but Brian and Jay have sung harmony live when I have seen them. The records usually say "oohs and ahhs"-Jay, Mr. Brett, Brian. That's why I found it odd that no one else sings besides Greg at this session. Doesn't really work without the harmonies. Very disappointing.
They could have had at least one harmony backing Greg, but no:( Unfortunately I disagree with the song suggestion. No Substance is perhaps my least favorite album. "Shades Of Truth" was pretty good; they could have done that one, but I find the reord as a whole to be a bit uninspired and by-the-numbers. Shame about this performance..