Music created on the spot without written music or preparation.

• A. Introduction
• B. Form
• C. Improvisation
• D. Chorus

Answer: (C)

Improvisation is music created on the spot without written music or preparation. It means inventing melodies, rhythms, and even harmonies in real time, guided by what you know about scales, chords, and the style you’re playing. Musicians listen, react to each other, and decide what to play next in the moment, making the performance spontaneous and unique. This approach is common in jazz and blues, and you can find it in various world musics and even as occasional cadenzas or ornamentation in classical performances.

An introduction is simply the beginning of a piece that sets up ideas for what follows, not the act of creating music spontaneously. Form refers to the overall structural plan of a piece—the layout of sections and repetitions—rather than how the music is created on the spot. A chorus is a recurring, repeated section or refrain in a song, which relates to structure rather than the spontaneity of creation.