In 2015 Duffman saw 29 performances during 4 concerts with 28 bands at 4 venues in 3 locations.

Date Concert Venue Location
Oct 22, 2015
Old 97's / Shark Tape
  Setlists
Union Transfer Philadelphia, Pennsylvania, United States
Sep 17, 2015
Alabama Shakes / Drive-By Truckers
  Setlists
The Mann Center for the Performing Arts Philadelphia, Pennsylvania, United States
Aug 13, 2015 –
Aug 16, 2015
The Peach Music Festival 2015
Bruce Hornsby / Lotus / Keller Williams / Warren Haynes / Railroad Earth / Trombone Shorty & Orleans Avenue / Bruce Hornsby & the Noisemakers / Ron Holloway Band
  Setlists
The Pavilion at Montage Mountain Scranton, Pennsylvania, United States
May 22, 2015
Delfest
"Delfest" / Nicki Bluhm & the Gramblers / The Brothers Comatose / Greensky Bluegrass / Eddie From Ohio / The Gibson Brothers / The Black Lillies / David Grisman / Railroad Earth / Old Crow Medicine Show / Steep Canyon Rangers / Del McCoury Band / Sierra Hull / Vickie Vaughn / Larry Keel / Town Mountain / Joe Craven Show all bands
  Setlists
Allegany County Fairgrounds Cumberland, Maryland, United States