Spafford visited Asheville’s Echo Sessions shortly before Halloween to play a set in an old church that was transformed into a recording facility.

The result was a nearly hour-long improvisational set (artists are encouraged to use the time to do whatever they’d like) which the band has released in full below. The jam comes at a particularly fruitful time for the budding jam rockers, as they also delivered a 57-minute jam during their show in Columbia, MO.

Watch the 55-minute jam below.