Answer :
Final answer:
A 4-movement work for a chamber ensemble of a 1st violin, 2nd violin, viola, and cello is called a String Quartet. It represents a common type of the chamber music genre, different from the Symphony, Concerto, or Sonatina, through its structure and orchestration.
Explanation:
A 4-movement work for a chamber ensemble consisting of a 1st violin, 2nd violin, viola, and cello is known as a String Quartet. By definition, a String Quartet is composed of four parts, each performed by a different string instrument. It usually follows a four-movement structure, which is similar to that of a symphony. However, it's not a Symphony, Concerto, or Sonatina since those are characterized by different structures and orchestration. The Symphony usually involves a full orchestra, the Concerto spotlights a solo instrument with orchestral accompaniment, and the Sonatina is typically a short or condensed Sonata.
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