aleatory Synonyms

not planned unspecified chancy program music unforeseen incidental unlooked-for unforeseeable unexpected undeterminable uncertain uncaused absolute music serendipitous aleatoric aleatory music air varie unascertainable randomized randomisation unpredictable unplanned hit-or-miss chamber orchestra chamber music blobby stochastic sonatina causeless casual broad blurry blurred arrangement arbitrary amorphous adventurous adventitious adaptation chance chaotic circumstantial risky riskful random occasional nocturne indeterminate indefinite haphazard