The first annual Lock’n Festival in Arrington, Virginia, just wrapped up, featuring a variety of unique, first time collaborations as a major selling point. However, fans were in for a surprise, as Phish guitarist Trey Anastasio ended up sitting in with Furthur for six songs, including a set closing ‘Scarlet Begonias>Fire On The Montain’.

You can see the entire setlist, via JamBands.com, below.

Uncle John’s Band, High Time, Dire Wolf, New Speedway Boogie, Cumberland Blues, Black Peter, Easy Wind, Casey Jones*, Bertha*, Truckin* > The Other One > Viola Lee Blues* > Scarlet Begonias* > Fire On The Mountain*

(*) with Trey Anastasio

Watch Below via gratefulsunshine:

Listen via JamBase.com: