Bartok is ****ing amazing, one of my favorite earlier 20th century composers. He certainly opened the doors (pun intended) in certain areas for composers like Ligeti and Stockhausen.
My favorite works are:
Music for Strings Percussion & Celesta
Miraculous Mandarin
String Quartet no 4
Out of doors
Piano Concerto no 1
Special call out to Six Dances In Bulgarian Rhythm too
