Answer:

ATONAL

Answer	Crossword Clue
ATONAL	Discordant, musically
ATONAL	Off key
ATONAL	Like much modern music

ATONAL	Musical style
ATONAL	Without a key
ATONAL	Lacking a key center
ATONAL	Scarcely tuneful
ATONAL	Having no key
ATONAL	Lacking a key
ATONAL	Like Alban Berg's music
ATONAL	Lacking a key, in music

ATONAL	Like much of Schoenberg's music
ATONAL	Like Berg's opera "Wozzeck"
ATONAL	Like many a Schoenberg composition
ATONAL	Like much 20th-century music
ATONAL	Discordant to many an ear
ATONAL	Unkeyed
ATONAL	Lacking a musical key
ATONAL	Like Schoenberg's "Moses und Aron"

ATONAL	Keyless
ATONAL	Like some 20th-century music
ATONAL	Really hard to hum along to
ATONAL	Without a musical key
ATONAL	Hard on the ear, maybe
ATONAL	Like music without a key
ATONAL	Like some 20th century music
ATONAL	Like some modern music

ATONAL	Lacking a key signature
ATONAL	Like Schoenberg's music
ATONAL	Lacking a key, musically
ATONAL	Musically keyless
ATONAL	Unkeyed, musically
ATONAL	Discordant
ATONAL	Ear-jarring, musically
ATONAL	Off-key

ATONAL	Keyless, to Schoenberg
ATONAL	Like many a John Cage composition
ATONAL	Like some Hindemith works
ATONAL	Like many Schoenberg compositions
ATONAL	Harsh-sounding, to some