Final answer:
A multi-movement form featuring a soloist playing against or with an orchestra is known as a Conerto. It showcases the soloist's skill and often contains three movements with fast-slow-fast tempos.
Step-by-step explanation:
A multi-movement form based on the opposition of one player against a larger group is known as a Concerto. A concerto typically features a soloist who plays in contrast or in collaboration with an orchestra or larger ensemble. It is a musical form that allows the soloist to display their virtuosity, skill, and expressiveness while interacting with the group.
The structure of a concerto often consists of three movements with a fast-slow-fast tempo scheme, and it has been a popular form since the Baroque period. Examples of famous concertos include Vivaldi's 'The Four Seasons' and Beethoven's 'Piano Concerto No. 5', also known as the 'Emperor'.