Question: Which vocalist was part of more bands, Spencer Chamberlain or Donnie Van Zant?

Related documents: [0]  [DOC] Spencer Chamberlain (born January 4, 1983) is an American musician, best known for being the current lead vocalist for the metalcore band Underoath. 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). He is currently the vocalist of Sleepwave. [END] 
[1]  [DOC] Donald Newton "Donnie" Van Zant (born June 11, 1952, in Jacksonville, Florida) is an American rock vocalist/guitarist. He is best known for being a member of the band 38 Special, from its formation in 1974 until 2013. He is the middle of three brothers: his older brother Ronnie was the original lead singer for Lynyrd Skynyrd who died in a 1977 plane crash in Mississippi along with five other members and associates of the band; his younger brother Johnny is the current Lynyrd Skynyrd's lead singer since 1987. Donnie and Johnny also perform together from time to time as the group Van Zant. [END]  
Answer: Spencer Chamberlain
Spencer Chamberlain