I am going to stand up for the singers. I am guessing that they were probably jet-lagged to some degree. I think the best song from that concert is Viola. A bonus track on the CD, an extra song from a single, and not featured on the album. The new Live in Japan with Brasil'77 ('73) has the same extreme separation of the vocals. It doesn't sound right. The live at the Greek Theatre ('72) has a separation, but not so dramatically. Back to Expo'70, we all know that Lani can sing. We all know that Karen can sing. Unfortunately, Karen is stuck to "sound like" Lani in an almost backing vocal situation.