Doug Maxson, on guitar. Upstairs etc. This looks a pair with the shot of Alec on bass, and the only time that happened was a couple of times with Cathy's song "Don't Wanna Know It's You." Just messing around that meant I came up with the riff for her words. The whole song was just two chords, B then A, which I really couldn't manage, but allowed Cathy to scream the lyrics along with Tari. I think what somebody documented is the very first time this started happening.
Worth noting is that no, I did not drink all that beer back then first--I was too young!
You can click the pair of pictures. It's like taping them back-to-back on a pencil. Twirl it and go whee!