Sinfonia Concertante for Violin, Viola, Cello and Orchestra (Mozart)

The Sinfonia Concertante for Violin, Viola, Cello and Orchestra in A major, K. Anh.

Mozart is believed to have started work on this concerto around the same time as the Sinfonia Concertante in E-flat major K.

[1] For unknown reasons Mozart abandoned the work after writing 134 bars of the opening movement.

[2] British composer Philip Wilby, who completed the movement in 1989, notes similarities between K. Anh.

The cello part also employs Jean-Louis Duport's newly introduced technique of using the thumb in order to reach higher registers (as the work contains a very demanding rising figure to a G-sharp from the bass within the course of a single bar).