Question: Who sang in more bands, Michael Crafter or Vincent Walker?

full_context: Document 1: Michael Crafter: Michael Crafter is an Australian musician, singer-songwriter and entertainment manager. His music career began as lead vocalist for I Killed the Prom Queen. He is the vocalist of Confession, and former vocalist of Carpathian and Bury Your Dead. Crafter runs a clothing apparel business, Mistake Clothing.
Document 2: Brian Robertson (trombonist): Brian Robertson (born October 19, 1979) is the trombone player for the Orange County-based third-wave ska band Suburban Legends and, along with Vincent Walker, is one of the two members to have played with the band since its origin as Bomb Squad. He met other ex-Suburban Legends / Bomb Squad members, trumpet player Aaron Bertram and best friend and trombone player Ryan Dallas Cook through the Huntington Beach High School Marching Band. In 2007, Robertson started to be known by the nickname 'Robot', most likely a reference to the dance moves he does onstage with the band, the first three letters of his last name, and/or to avoid confusion with the band's other Brian, Brian Klemm.
Document 3: Michael Johns (singer): Michael Johns (born Michael John Lee; 20 October 1978 – 1 August 2014) was an Australian singer who finished in eighth place on the seventh season of "American Idol", in 2008. In 2009, he released a music album, "Hold Back My Heart," which sold 20,000 copies. Johns died on 1 August 2014, at the age of 35 of dilated cardiomyopathy.
Document 4: Suburban Legends (Raw): After the departure of lead singer Chris Batstone, Suburban Legends re-released their debut album, Suburban Legends, without the vocal track featuring Chris. This karaoke version of the EP Suburban Legends is essentially the same album from the Orange County based third wave ska band. It was released in 2002, but was only available for download on their MP3.com site, which is no longer available. It has since been released as a free download on their official forums.
Document 5: Geoffrey O'Connor: Geoffrey David O'Connor is an indie pop musician and producer based in Melbourne. He has released the solo albums, "Vanity Is Forever" (2011) and "Fan Fiction" (2014), both through Chapter Music. O'Connor is also a member of indie pop group The Crayon Fields, on lead guitar and lead vocals. Before performing solo under his birth name he was known as Sly Hats, and released one album "Liquorice Night" (2007).
Document 6: Vincent Walker: Vincent Francis Walker (born March 2, 1980), better known as Vince Walker, is an American multi-instrumentalist, best known as the lead singer of third-wave ska band Suburban Legends. He was formerly the lead trumpet player, and left sometime after the release of "Rump Shaker", but returned to the band in September 2005 for the band's appearance on the Jerry Lewis MDA Telethon, which happened to be lead singer Tim Maurer's last performance. He replaced Maurer as the singer in an odd switching of roles, and continues with the band as frontman.
Document 7: Rump Shaker (album): Rump Shaker is the second album of the third-wave ska band Suburban Legends. It was released June 28, 2003 in Los Angeles, California by Lobster Girl Records. The album initially sold 15,000 copies and was subsequently released on Brand New Hero Records in the UK. Rump Shaker was the last Suburban Legends album to feature trombonist Dallas Cook, who died in a hit-and-run motorcycle accident on October 19, 2005. It was also the last CD to feature Chris Maurer on bass guitar and Tim Maurer on vocals. Aaron Bertram and Vince Walker also left the band after this album, but Walker returned as the band's lead singer and Bertram started performing live with the band again from 2009 onwards.
Document 8: Michael Bradley (singer): Michael Bradley is a former lead singer for the American rock band Paul Revere & the Raiders. He is also known among anime fans as a composer and singer for "Robotech".
Document 9: Tim Maurer: Timothy Robert "Tim" Maurer (born October 10, 1980) is an American singer, best known as the former lead singer of third-wave ska band Suburban Legends. He has left the band on two separate occasions. The first was in 2000 after the recording of Origin Edition. He rejoined the band in early 2002 after his replacement singer Chris Batstone left the band. He officially left the band again in September 2005 after the band's third consecutive appearance on the Jerry Lewis MDA Telethon, performing a new song entitled "Moving Closer." The band's former trumpet player, Vincent Walker, rejoined the band for the performance, then took over as lead singer afterward. Maurer returned for a final performance with the band on November 29, 2005 at Huntington Beach High School for a benefit show for the Ryan Dallas Cook Memorial Fund, which was set up following the death of Suburban Legends' trombonist Dallas Cook.
Document 10: Michael Fall: Michael Fall, (born, Lokeren, June 9, 1980) is a Belgian DJ, producer, and remixer from Moerbeke-Waas, Belgium. Michael Fall is currently signed on different record labels worldwide. In the past he signed deals with major labels such as Universal Music Group, CNR Records in Belgium & ZYX Music records in Germany. He released many songs that have charted in Belgian and foreign charts. He ended his publishing contract with BMC Universal in November 2012 and signed a new publishing contract in November 2012 at the Dutch independent music publisher Strengholt Music Group. In 2013 he released his debut album called 'Turn on your radio' and was listed in the official Belgium album charts. Michael is owner of MFrecords based in Belgium and he owns a record store in Zelzate. In 2014 he received a golden award for his debut album. On 31 July 2015 he released his second album called 'Ain't nothing but a party'.
Document 11: Mike Muir: Michael Allen "Mike" Muir (born March 14, 1963) is the lead vocalist of the Venice, California crossover thrash bands Suicidal Tendencies, Los Cycos and the funk metal band Infectious Grooves. He has also released several solo albums under his nickname Cyco Miko. Muir's trademark is wearing bandanas, jerseys with the number 13, and hats with block style letters that read "Suicidal".
Document 12: Confession (band): Confession was an Australian melodic hardcore band from Melbourne, Victoria. The band was formed in 2008 by frontman Michael Crafter, who is best known as the former lead vocalist of metalcore bands I Killed the Prom Queen, Carpathian and Bury Your Dead. They have released one EP entitled "Can't Live, Can't Breathe", and three albums: "Cancer", "The Long Way Home" and "Life And Death" on Resist Records.
Document 13: Your Past Comes Back to Haunt You: Your Past Comes Back to Haunt You is the second EP released by Australian metalcore band I Killed the Prom Queen in 2005. It is also the last album to feature Michael Crafter on vocals, besides the re-issue of Music for the Recently Deceased. The EP features a reworked version of "To Be Sleeping While Still Standing" which was originally done by an earlier band including Crafter and Weinhofen called The Fall of Troy. It also includes three tracks form their first EP, "Choose to Love, Live or Die", along with two new songs, "Never Never Land" and "You're Not Worth Saving". Some of its tracks appear on the group's live album CD/DVD, "Sleepless Nights and City Lights", which was issued in November 2008.
Document 14: Suburban Legends (Tim Remix): After the departure of lead singer Chris Batstone, Suburban Legends re-released their first EP, "Suburban Legends", by removing the vocal track featuring Chris, and replacing it with a vocal track of new lead singer, Tim Maurer. Suburban Legends (Tim Remix) is essentially the same album from the Orange County based ska punk band. It was first released in 2002 in Los Angeles, California by We the People Records. Its first pressing came with a green cover which was later changed to an orange cover. The green cover version is now very hard to find. The music, however, is the same on both editions. The main difference between the two versions is that the green cover edition was released by We the People Records, while the orange cover edition was self-released by the band at the end of the year. As of 2012, both versions are out of print.
Document 15: Luis Beza: Luis Beza (born January 2, 1985 in Santa Ana, California) was the trumpet player for third-wave ska band Suburban Legends. He joined the band in Summer 2005 after the departure of Aaron Bertram, replacing him on trumpet. In July 2005 Luis started a hip-hop side-project called Lyricle Miracle with fellow Suburban Legends band member Derek Lee Rock and Jack Bartlett. He is American born and is of both Salvadoran and Guatemalan ancestry.
ground_truth: Michael Crafter