Ummm, yeah, I agree with many of them making very little music and then dissapearing or changed the style. I especially agree about MULTIPLEX that made pretty stunning goa trance songs : Audio Engine, Flotation, Twisted Tale...IN TRANCE that made one mellow goa trance album and then dissapeared. I agree about THE SECRET, it is really primal stuff...
I would also add TALKING SOULS, side project of Tim Schuldt that made only 3 tracks which is such shame, I find it as perfect music. There is also DODGY CONNECTION, amazing collaboration between Joti Sidhu and Tim Schuldt that I lack an album from !