Cubus plays Adagio in D minor by Johann Sebastian Bach. It is an arrangement of an Oboe Concerto by Allesandro Marcello.
Audio file: https://cubusdk.bandcamp.com/track/bach-adagio-bwv-974
A link to the sheet music can be found at http://cubus-adsl.dk/
Playlist with all musical pieces by BACH posted by cubusdk: https://www.youtube.com/playlist?list=PLEB5B1DFA5C94D5EE
Sound: Dark Ballad [006] on Roland RD-700GX.
Reverb: Redline Reverb plugin, Preset: Stadium, 40 % wet.