NYC, February 11, 12 & 14, 1974
"Things went better for Evans and his trio a couple of years later when the second of these projects, Symbiosis, was recorded. A suite in two movements and five parts composed by Claus Ogerman, it is based on the encounter and contrast between two dialoguing entities (trio and full orchestra) according to a compositional model widely diffused during Romanticism in piano and violin concertos. Ogerman counter-posed the trio with a rather anomalous ensemble, in which six French horns, clarinets, oboes, bassoons and four percussionists are added to the three usual big band sections (trumpets, trombones and saxophones). Perhaps, thanks to a shared musical background, Ogerman was German by birth and musical culture, Evans, for his part, had a deep knowledge of European classical music, the same "linguistic" area beloved by Ogerman - Symbiosis can be considered Evans' artistic peak of those years.
Freed from the onus of arranging the music (as he had had to do with the trio), and finding himself dealing with particularly stimulating harmonic sequences, Evans and his trio, surely spurred by that broad and fascinating overall "sound", gave their best. An important role was also played by Ogerman’s acute capacity to insert Bill's soloing into a well Nineteen-seventy-five was a very important year for Evans. Drummer Eliot Zigmund took his place in the trio, joining Gomez and Evans for an extensive European tour in February of that year."
(Bill Evans: Ritratto d’artista con pianoforte/Bill Evans: The Pianist as an Artist.Enrico Pieranunzi, Rome 1999, Stampa Alternativa)(thanks http://jazzprofiles.blogspot.com !!!)