Form refers to the overall design of a piece of music, including the arrangement of sections, the repetition of themes, and the development of ideas.

A phrase is the basic unit of musical form, consisting of a group of notes that form a complete musical idea.

A refrain is a section of music that is repeated, typically at the end of each verse or stanza.

A bridge is a section of music that contrasts with the main theme, typically occurring in the middle of a song.

An outro is the final section of a piece of music, typically consisting of a fade-out or a short, concluding statement.

Transposition is the repetition of a theme in a different key, typically a higher or lower one.

Development is the gradual change of a theme over time, typically involving the use of different harmonies, rhythms, and textures.

A scale is a series of notes that moves in a stepwise fashion, typically from a lower to a higher pitch.

A cadence is a chord progression that resolves to a tonic chord, typically providing a sense of closure.

A sequence is a series of notes that moves in a repeated pattern, typically involving the repetition of a melodic or rhythmic figure.

An arpeggio is a broken chord, typically played with the notes of the chord spread out over time.

A variation is the repetition of a melodic or rhythmic figure at different pitches, typically involving the use of different harmonies, rhythms, and textures.

Structure refers to the overall structure of a piece of music, typically consisting of an introduction, a body, and a conclusion.

A sequence is the repetition of a theme in the same key, typically involving the repetition of a melodic or rhythmic figure at different pitches.

Modulation is the change of a theme from one key to another, typically involving the use of different harmonies, rhythms, and textures.