Jules Massenet (1842-1912): Meditation aus der Oper / from the opera
"Thais" -  played by Martin Ostertag (Cello) and

Boris Björn Bagger (guitar), http://www.borisbagger.de/

Video in You Tube here

in better quality as wmv here:

This piece is available on the CD "Nocturne" with Martin Ostertag and Boris
Björn Bagger

Both are teaching at the University of Music Karlsruhe / Germany,
http://www.hfm-karlsruhe.de/

Boris Björn Bagger und Martin Ostertag

This piece is available in several arrangements:

cello and guitar, flute (violin) and guitar, violin (flute, oboe,
saxaophone, clarinet) and piano, violin and string orchestra or string
quartett

sheet music and CD here

http://www.edition49.de

music publishing company