(1) Music for three performers; in music that descends from Baroque practice, this implies two treble instruments and basso continuo. (2) The center section of form in the minuet-and-trio family, generally in somewhat reduced orchestration or more passive setting. This comes from the tradition of alternating full ensemble and reduced forces in evenings of dance. Have a look.
A group of three performers, or the piece written for them to perform. The trio was a feature of 17th century opera and also appeared occasionally in 18th century opera seria. Trios became very popular towards the end of the 18th century in opera buffa and particularly fine examples can be heard in Mozartâ€™s The Marriage of Figaro as well as CosÃ¬ fan tutte. Verdi and R. Strauss both used the trio in the 19th and early 20th centuries. Strauss uses the trio to brilliant effect in the final climax of his opera Der Rosenkavilier.
Trio was a 1987 album featuring country and rock superstars Dolly Parton, Emmylou Harris and Linda Ronstadt. Longtime friends and admirers of one another, Parton, Ronstadt and Harris first attempted to record an album together in the mid 1970s, but scheduling conflicts and other difficulties (including the fact that the three women all recorded for different record labels) prevented its release. (Some of the fruits of these aborted '70s recording sessions did make it to the women's respective solo recordings.)