Actually he's playing a Conn Multivider, a device similar to a Varitone, I guess. I have the album, and I shuddered when I read that he was playing the gizmo, but the electronics do not dominate. Frank's playing is as fluid and as inventive as ever, and the notes he's actually playing are way out in front of the tones produced by the Multivider - much of the time one doesn't even notice the added tones. Caveat - apparently the actual tape was rather short, so we are given full length and edited versions of two of the tunes in order to stretch the program. Still, it's new music from one of the greatest trombonists, so I welcome it, warts and all.