SUFFOCATION Featuring DYING FETUS’ JOHN GALLAGHER: Video Footage Of Slovenia Concert Panagiotis KaragiannidisJune 6, 2013 SUFFOCATION has recruited John Gallagher (DYING FETUS) to handle lead vocals on a number of shows this spring. Gallagher is filling in for SUFFOCATION's regular vocalist, Frank Mullen, who is unable to make the dates due to personal commitments. 02 min read