Sean O'Donnell is from Pittsburgh and has been a member of the groups Truth in Advertising, Farm Gold Ensemble, Soliloquy, Funkadelic Relic, Laurel Highlanders Pipe Band. His first solo EP, Catching the Ghosts, was released in 2007 and is available at the open source audio site, Internet Archive.
These are photos from concerts where Sean O'Donnell played, so they may be of other bands that played the concert as well.
Yellowcard / Sean O'Donnell Mar 22, 2017 Tempe, Arizona, United States Uploaded by Haley Penny
Yellowcard / Sean O'Donnell Mar 22, 2017 Tempe, Arizona, United States Uploaded by Shinigami3y3s