Theme and variations is a musical form in which a melody or theme is presented in its original form and then repeated with variations in melody, harmony, rhythm, or orchestration.

A symphony is a large-scale musical composition typically written for an orchestra and consisting of three or more movements.

The twelve-bar blues is a musical form that consists of a repeating pattern of chords, typically played in 4/4 time and using the I, IV, and V chords.

A concerto is a musical composition written for a solo instrument and an orchestra, in which the soloist plays a prominent role.

Sonata-allegro form is a musical form that is characterized by a recurring pattern of themes or melodies, typically in a fast-slow-fast tempo.

A trio is a musical composition written for three instruments, typically two melody instruments and a bass instrument.

Verse-chorus form is a musical form that consists of a recurring pattern of verses and choruses, typically with different lyrics and melodies.

A sonata is a musical composition written for a solo instrument, typically a piano or a guitar.

Rondo form is a musical form that is characterized by a recurring pattern of themes or melodies, typically in a fast-slow-fast tempo.

A symphony is a large-scale musical composition typically written for an orchestra and consisting of three or more movements.

The twelve-bar blues is a musical form that consists of a repeating pattern of chords, typically played in 4/4 time and using the I, IV, and V chords.

A concerto is a musical composition written for a solo instrument and an orchestra, in which the soloist plays a prominent role.

A fugue is a musical composition that is characterized by a recurring pattern of themes or melodies, typically in a fast-slow-fast tempo.

A trio is a musical composition written for three instruments, typically two melody instruments and a bass instrument.

Verse-chorus form is a musical form that consists of a recurring pattern of verses and choruses, typically with different lyrics and melodies.