Christy Doran and Fredy Studer in Half A Lifetime (1977 to 1994)

Many luminaries are playing on these tracks along with the great Cristy Doran, eg Dauner, Schoof, Mariano, Van't Hof which are compiled from different sources. 

As indicated here, on the discogs page:

Recording dates and locations:

1-1: April 25, 1994, Radio Studio Zürich, Switzerland

1-2: July 8, 1989, Pilatus-Festival, Luzern, Switzerland

1-3: March 11, 1994, Altes E-Werk, Göppingen, Germany

1-4: October 28, 1979, Limmathaus, International Jazz Festival Zürich, Switzerland

1-5: October 27, 1985, Volkshaus, International Jazz Festival Zürich, Switzerland

1-6: April 21, 1979, Gemeindezentrum Meierskappel, Switzerland

1-7: May 30, 1989, Soundville Recording Studios Luzern, Switzerland

1-8: August 31, 1989, Festhalle, International Jazz Festival Willisau, Switzerland

1-9: January 15, 1993, Jazzclub Allmend, Oberengstringen, Switzerland

1-10: August 27, 1977, Festhalle, International Jazz Festival Willisau, Switzerland

1-11: June 27, 1992, Glass Slipper Club, International Jazz Festival Vancouver, Canada

2-1: January 21, 1984, «CaBaRe»-Club, Zürich, Switzerland

2-2: June 5, 1982, «Mohren», Willisau, Switzerland

2-3: January 15, 1993, Jazzclub Allmend, Oberengstringen, Switzerland

2-4: August 12, 1985, «Sedel» rehearsal room, Luzern, Switzerland

2-5: August 31, 1989, Festhalle, International Jazz Festival Willisau, Switzerland

2-6: October 18, 1992, «Schüür», Luzern, Switzerland

2-7: April 26, 1993, «Stadtgarten» Köln, Germany

2-8: January 31, 1994, «Jazzclub» Hannover, Germany

Most of the music is experimental, advanced, complicated and/or improvised music, with not so much to cling to in the hopes of regularity, familiarity.

The last track, called Quasar: