''This article is about the musical ensemble. For other uses of trio, see Trio.

Trio is generally used in any of the following ways:

• Three musicians playing the same or different musical instrument.
• The performance of a song by three people.

See Also:

• Piano trio (piano, violin, cello)
• String trio (violin, viola, cello)
• Clarinet-violin-piano trio (clarinet, violin, piano)
• Power trio (electric guitar, bass guitar, drum kit)
• Harmonica trio (chromatic harmonica, bass harmonica, chord harmonica)
• The middle section of a piece in ternary form
• The third section of a march (music)

Musical groups