Basso continuo - In the Baroque period, the basso continuo consists of a single bass line (for example, a cello) with a keyboard part (for example, a harpsichord) filling in the harmonies. The basso continuo supports one or more melody lines.
Concerto grosso - A small group of soloists (concertino) contrasts with a larger group of instrumentalists (ripieno). The concerto grosso developed in the Baroque period.
Da capo aria - An aria in ternary form used in opera and oratorio. The 3rd section was not written out and was often ornamented.
Exposition - The first section of a movement in sonata form.
Passacaglia - Variations over a ground bass.
Ritornello - Ritornello means a theme which returns frequently throughout a piece. In a concerto grosso, the ritornello is the main, recurring theme played by the ripieno. The ritornello may return frequently throughout the movement.
Sonata form
A form used for the first movement of a sonata or symphony.
It consists of three sections:
Exposition – 2 contrasting subject groups in related keys
Development
Recapitulation – 2 contrasting subject groups return but in the same key as the opening
Subject - The main theme in a composition, the main themes in sonata form, or the main theme on which a fugue is based.
Through-composed - A vocal piece in which there is little or no repetition of the music.