Dariusz Skoraczewski, cello; and Jacqueline Pollauf, harp. Fratres was written by Estonian composer Arvo Pärt (b. 1935) in 1977. Pärt is considered a minimalist composer, and the entire piece is based on just a few bars of material. The piece exists in versions for many different combination of instruments. This version is most similar to the version for cello and piano. The lowest string of the harp is tuned a third lower than usual to approximate the range of the piano.