Here is my list of ECM favorites:
David Darling: Cello - marvelous tone poems for cello
Norma Winstone: Somewhere Called Home - one of the most underrated jazz singers
Stefan Micus: Ocean/Twilight Fields/To The Evening Child/Wings Over Water - 4 masterpieces from this immense artist/traveler
Agnes Buen Garnas: Rosensfole - a collection of ancient songs from Scandinavia, Jan Garbarek adds his usual touch
Pat Metheny Group: Travels - concert recordings, 5 stars
Pat Metheny: New Chautauqua - an outstanding guitar album
Keith Jarrett: The Sun Bear Concerts - 10Lp's full of incredible piano performances, from atonal to melodic to experimental
Chick Corea: Piano Improvisations vol.1/vol.2 - The best Corea
Arvo Part: Alina - delicate structures for piano
Eleni Karaindrou: the entire discography - fragile, evocative soundscapes for traditional orchestra and choir