tune, melody, air, strain, melodic_line, line, melodic_phrase: a succession of notes forming a distinctive sequence; "she was humming an air from Beethoven" tune: the property of producing accurately a note of a given pitch; "he cannot sing in tune"; "the clarinet was out of tune" tune: the adjustment of a radio receiver or other circuit to a required frequency tune, tune_up: adjust for (better) functioning; "tune the engine" tune, tune_up: of musical instruments; "My piano needs to be tuned"