Beloved Hamster, who knows of cello's (and Arvo Part's) medicinal power, after reading of my desperate need for cellos, sent me (THANKS!):
Arvo Part- Fratres
- Original (12 cellos): https://www.youtube.com/watch?
- Large ensemble/film: https://www.youtube.com/watch?
- Cello and piano: https://www.youtube.com/watch?
He has arranged it (and allowed others to to do so) for many sets of instruments-- cello/guitar, cello/harp, violin/piano, violin/orchestra, cello choir/percussion, etc. You can poke around the Internet if you are interested.
- String Quartet (Kronos): https://www.youtube.com/watch?
Another Arvo Part piece, Spiegel im Spiegel (Mirror in Mirror). Again, he has arranged this for multiple instrumental combinations but this is a recording of the cello/piano version.