I figured out a little cello riff for 'Then Go'. It's very short, only 4 notes, but I believe they are correct, and they match well with what is on the cd from Union Chapel:
 
Each of the 4 notes are whole notes. Vibrato adds a lot to the overall sound.Also, all of the notes are on the 'C' string.
 
IV-2
III- 3  1  2

Cheers,
Krystian