From the liner notes:
Does the “perpetual motion” of the title refer to life on the road? Or the ongoing continuum of musical tradition, which in the hands of Rüegg can be honored and manipulated at the same time? Hard to say, since in the musical realm of Mathias Rüegg, meanings have multiple choices and anything is possible. — Art Lange
Personnel: Lauren Newton (voice);
Hannes Kottek, Karl Fian, Herbert Joos, Christian Radovan, John Sass (brass);
Wolfgang Puschnig, Harry Sokal, Roman Schwaller (tenor sax);
Woody Schabata (marimba, vibes)
Uli Scherer (piano, Fender piano)
Heiri Kaenzig (bass)
Joris Dudli (drums, percussion)
Wolfgang Reisinger (drums, percussion)
Mathias Ruegg (leader)
Recorded Live May 17 & 18, 1985 at Mühle Hunzigen, Rubigen/Switzerland.