Trumpet player Uli Beckerhoff invited Michel Herr to join the German quintet "Jazztrack". The band played numerous concerts, club dates and festivals, and with Michel Herr, recorded the album First Call. Sigi Busch (double bass), Wolfgang Engstfeld (tenor, soprano sax), Michel Herr (piano), Uli Beckerhoff (trumpet), Heinrich Hock (drums). Germany, circa 1973.