An excellent year with many albums that I expect to play for some time to come. I'm not a big jazz fan but the three cd album by Kamasi Washington is indeed epic. The full list in no particular order:

Kamasi Washington: The Epic
Anna Þorvaldsdóttir: In the Light of Air
Julia Kent: Asperities
Jamie XX: In Colour
Kendrick Lamar: To Pimp a Butterfly
Tame Impala: Currents
Kuniko: IX - Iannis Xenakis
Séverine Ballon: Solitude
Holly Herndon: Platform
Alina Ibragimova: Ysaÿe Sonatas for Solo Violin
Kaija Saariaho: Let the Wind Speak
Maria Milstein & Hanna Shybayeva: Sounds of War
Kurt Vile: b'lieve i'm goin down

Pitchfork's list of the top 50 albums of 2015. The best albums of 2015 according to Dutch music critics and Ted Gioia's pick of the 100 best albums of the year.