= ad lib, adj.

Of a discourse, etc.: Composed, spoken, performed, or acted at the moment, without premeditation or preparation. Now usually understood to mean…

Of a piece of music: performed, or intended to be performed, in whatever manner the performer pleases. Later more generally: extemporized…

Of, relating to, or characterized by improvisation; that uses improvisation. Cf. earlier improvisatorial, adj. improvisatory, adj.

achieved by magadizing.

Of music: performed in the style of jazz; played in a lively or syncopated manner. Frequently with up.

That has been made to resemble jazz; that has been made jazzy (in various senses). Cf. jazzify, v.

Jazz. That plays, or is played, in the manner of a stomp; exciting with a heavy, ‘swinging’ rhythm; also, that dances the stomp.

transferred and figurative. in the (or a) groove (cf. 2c above) = groovy, adj. 3. Hence groove is used to mean: a style of playing jazz or similar…

figurative. Dull, heavy; wanting in gaiety or brightness. Applied loosely to music, its performance, interpretation, etc.

Playing, or capable of playing, jazz or similar music brilliantly or easily; ‘swinging’; appreciative of such music, ‘hep’, sophisticated; hence as…

Music. Applied to a musician who plays jazz with swing; also, to the music itself. Cf. swing, n.2 10b.

That plays or is characterized by a riff or riffs. Cf. riff, v.1

Supplied or provided with Muzak; (of a piece of music) adapted or transformed into Muzak.

Chiefly U.S. That has been made to resemble funk music; that has been made funky. Cf. funkify, v.

Of music or its performance: characterized by noodling (noodling, n.2 1); intricate, (over-)elaborate; improvisatory or aimless.

Of music or its performance (esp. the playing of an electric guitar): showy, over-elaborate; noodly.

of or pertaining to a style of music in which several records are intercut with each other, using the scratch technique, to create a ‘collage’ of…