Stumped on this musical crossword clue? Find out the answer!

OPUS is a term used in music to refer to a composition, a work, or a piece that is created by a composer. Think of it as a product or a creation that is marked with a unique identification number. For instance, Beethoven’s Fifth Symphony is known as Opus 67. In the context of the crossword clue ‘Sonata, e.g.’, OPUS can be interpreted as a musical composition that belongs to a specific genre. In this case, the genre is the sonata. A sonata is a musical composition that is usually written for one or more instruments, and it typically consists of three or four movements. A composer can have many different works or compositions, and each one can be identified with a unique identification number, which is often referred to as an OPUS number. The OPUS number is assigned by the composer or the publisher of the work, and it helps to differentiate one piece from another. To summarize, OPUS is a term used in music to identify a composition or a work created by a composer. In the case of the crossword clue ‘Sonata, e.g.’, OPUS refers to a composition that belongs to the specific genre of a sonata.