I saw the chords posted for this one already, but I figured out the riff.
|--------------------------------------|
|--------------------------------------|
|-------------------------5-7-7--5-----| x 2
|---------5-7-7--5-----5-7-----7-------|
|------5-7------7---8-8----------------|
|--8-8---------------------------------|
Then
[ Tab from: http://www.guitaretab.com/t/the-avett-brothers/340760.html ]
|-------------------|
|-------------------|
|-------------------|
|-----7--7--7----9--|
|----8--8--8---8/10-|
|-------------------|
Then it's back to the chord progression throughout the song:
C Em F G
************************************
| / slide up
| \ slide down
| h hammer-on
| p pull-off
| ~ vibrato
| + harmonic
| x Mute note
| b Bend
| pb Pre-bend
| br Bend release
| pbr Pre-bend release
| brb Bend release bend
************************************
