duo

UK: ˈdjuːəʊ | US: ˈduːoʊ

Definition
  1. n. a pair of people or things, especially in music or performance

  2. n. a musical composition for two performers

Structure
duo <two, from Latin "duo">
Etymology

The word "duo" comes directly from Latin "duo," meaning "two." It entered English in the 16th century, retaining its original sense of a pair or couple. In music, it specifically refers to a composition or performance involving two artists. The Latin root is also the source of related English words like "dual" and "duet."

Examples
  1. The jazz duo performed an unforgettable set at the club.

  2. They formed a comedy duo and quickly gained popularity.

  3. The piano and violin duo played a beautiful sonata.

  4. The detective duo solved the case in record time.

  5. This song was originally written for a vocal duo.