These tracks would suffice as auditory illustrations for The Good Shpeherd.

The Dreamscape by Chad Seiter
Symphony No. 6 by Vaughan Williams
Mosquito by Yeah Yeah Yeahs
Mosquito by Flexness
Infra 2 Max Richter
4 Sea Interludes by Benjamin Britten
Recomposed: Vivaldi Four seasons by Max Richter – Spring 0, Spring 1, Shadow 2, Winter 2, Winter 3.