Which vocalist was part of more bands, Spencer Chamberlain or Donnie Van Zant?
Spencer Chamberlain:  Before fronting Underoath, Chamberlain was the vocalist for the band This Runs Through in which his brother, Phil Chamberlain, was the drummer (who is also the drummer for To Speak of Wolves). Spencer Chamberlain:  He is currently the vocalist of Sleepwave.
i don't know