Mark Erickson has seen 22 bands.

Band Concerts Seen
  Earth, Wind & Fire 6 concerts
  Chicago 4 concerts
  OneRepublic 2 concerts
  Train 2 concerts
  Alanis Morissette 1 concert
  American Authors 1 concert
  Barry Manilow 1 concert
  Dennis DeYoung 1 concert
  Elton John 1 concert
  Fitz and the Tantrums 1 concert
  Gavin DeGraw 1 concert
  Grace Potter 1 concert
  Hall & Oates 1 concert
  Kelly Clarkson 1 concert
  Maroon 5 1 concert
  REO Speedwagon 1 concert
  Rob Thomas 1 concert
  Rozzi 1 concert
  The Doobie Brothers 1 concert
  The Script 1 concert
  Three Dog Night 1 concert
  Tristan Prettyman 1 concert