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In music, the introduction is a passage or section which opens a movement or a separate piece, preceding the theme or lyrics. In popular music, this is often known as the song intro or just the intro. The introduction establishes melodic, harmonic or rhythmic material related to the main body of a piece.

Introductions may consist of an ostinato that is used in the following music, an important chord or progression that establishes the tonality and groove for the following music, or they may be important but disguised or out-of-context motivic or thematic material. As such, the introduction may be the first statement of primary or other important material, may be related to but different from the primary or other important material, or may bear little relation to any other material.

A common introduction to a rubato ballad is a dominant seventh chord with fermata, Play an introduction that works for many songs is the last four or eight measures of the song, Play while a common introduction to the twelve-bar blues is a single chorus. Play

If a movement in sonata form starts with an introductory section, this introduction is not usually analyzed as being part of the movement's exposition.

See also

• Anacrusis
• Dominant (music) and secondary dominant
• Fanfare
• Leading tone
• Overture
• Turnaround (music)

References

1. ^ Pease, Ted (2003), p.172. Jazz Composition : Theory and Practice. ISBN 0-87639-001-7.
2. Weir, Michele (2005). Jazz singer's handbook: the artistry and mastery of singing jazz, p.53. Alfred Music. ISBN 9780739033876.
3. Weir (2005), p.57.
4. Weir (2005), p.55.

v t e Musical form and development
Arch form Argument Ausmultiplikation Bar form Binary form Bridge Call and response Cell Coda Conclusion Cycle Cyclic form Developing variation Development Drop Exposition Finale Formula composition Hook Introduction Leitmotif Lick Melody Motif Movement Ostinato Overture Period Phrase Pre-chorus Post-chorus Recapitulation Repetition Reprise Riff Rondo Rondò Section Sonata form Sonata rondo form Song structure Strophic form Ternary form Theme Thirty-two-bar form Through-composed Transition Variation Verse–chorus form

v t e Parts of a song
Verse–chorus form	Introduction Verse Pre-chorus Refrain/Chorus Post-chorus Bridge Solo Guitar Drum Break Breakdown Outro False ending
Other musical elements	Bassline Counter-melody Drone Drop Harmony Vocal harmony Hook Melody Ostinato Loop Riff Rhythm Groove

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