Burton layered his own vibes, piano, and marimba over a walking trio, creating something fractured and restless.
The Time Machine sounds like being inside a prism. Gary Burton's vibraphone sits on top, ringing out in that cool, almost glass-like tone he'd become known for, but then the piano enters — his own playing — and suddenly the space feels crowded in an interesting way. There's Steve Swallow on bass and Larry Bunker on drums underneath, locked into a groove, but Burton's overdubbed layers don't sit neatly on top of them. Instead they float, sometimes in conversation with the rhythm section, sometimes at odds with it. It's restless. The marimba adds warmth where the vibes are brittle, and the piano pushes the harmony into unexpected corners. For 1966, this approach was unusual enough that AllMusic reviewer Scott Yanow noted the overdubbing as a distinctive choice — Burton essentially arranging with himself, layering texture over a live trio foundation. The album sits somewhere between Burton's work as a straight-ahead vibraphonist and his later experiments with electronics and fusion. This isn't a peak-period Burton record, nor is it essential for newcomers. But if you already know his cleaner trio work and want to hear him thinking about space and texture, about how to make a three-piece sound larger without just turning up the volume, this has genuine interest. It's the sound of a player asking questions about his own instrument rather than simply answering them.