Which term designates music featuring a solo instrument with orchestral accompaniment?

• A. Andantino
• B. Concerto
• C. Alla
• D. Animato

Answer: (B)

A piece that features a solo instrument with orchestral accompaniment is called a concerto. The form centers on the soloist, who is highlighted and interacts dialogue-like with the orchestra, providing contrasts in texture, mood, and virtuosic displays. Cadenzas and virtuosic passages for the soloist are common, underscoring the spotlight on the solo instrument while the orchestra supplies the supportive backdrop. Traditionally, concertos are organized in multiple movements, often fast–slow–fast, though variations exist and there are related forms like the concerto grosso, which contrasts a small group with the full orchestra.

These other terms are not naming a piece in which a single instrument is showcased with orchestral accompaniment. Andantino is a tempo indication meaning moderately slow, not a form. Alla is a stylistic directive used in phrases like alla polacca or alla breve, not a solo-with-orchestra designation. Animato means animated in character, an expressive marking rather than a form.