Between Johnny Edwards and Ed Robertson, which musician was involved with more bands?
John Douglas "Johnny" Edwards
Ed Robertson
Lloyd Edward Elwyn "Ed" Robertson (born October 25, 1970) is a Canadian musician, best known as the lead singer, guitarist, and songwriter of the band Barenaked Ladies.
 He, along with former member Steven Page, founded the group in 1988.
 As of Page's departure in 2009, Robertson and bassist Jim Creeggan are the only remaining original members of the band.
Johnny Edwards (musician)
John Douglas "Johnny" Edwards is an American rock singer who sang for the bands Buster Brown, Montrose, King Kobra, Wild Horses, Northrup, Royal Jelly and is best known as the second lead singer of the rock band Foreigner.
Falling for the First Time
"Falling for the First Time" is the third single by Canadian group the Barenaked Ladies from their 2000 album, "Maroon".
 The song was composed by Steven Page and Ed Robertson.
 The song also appears on the band's 2001 compilation album, "Disc One: All Their Greatest Hits" and the soundtrack of the TV show, "Malcolm in the Middle".
 Following the terrorist attacks on September 11, 2001, the song was placed on the list of post-9/11 inappropriate titles distributed by Clear Channel. Wild Horses (US rock band)
Wild Horses was a band that originally featured former Buster Brown and Montrose members Johnny Edwards and James Kottak.
 The band also featured James Kottak's former Kingdom Come bandmate Rick Steier.
 The band went through at least two bassists: Chris Lester and Jeff Pilson. Johnny Edwards (footballer)
Johnny Edwards (27 March 1912 – 12 November 1973) was an Australian rules footballer who played with North Melbourne in the Victorian Football League (VFL). Maybe You Should Drive
Maybe You Should Drive (commonly abbreviated MYSD) is the second studio album by Barenaked Ladies.
 It was released in August 1994 and went double platinum in Canada, reaching No. 3 upon its release.
 It was also their first album to chart in the US, peaking at No. 175 on the "Billboard" 200.
 Unlike on their previous album, "Gordon", Steven Page and Ed Robertson did not collaborate as frequently. King Kobra III
King Kobra III, released in 1988 on New Renaissance Records, was the first and last album by the Edwards, Michael-Phillips, Northrup, Hart and Appice line-up of King Kobra.
 After the demise of the original line-up, remaining members Carmine Appice and David Michael-Phillips teamed up with Johnny Edwards, Jeff Northrup and Larry Hart, all 3 members of the Sacramento, CA band Northrup at the time. Unusual Heat
Unusual Heat is the seventh studio album by British-American rock band Foreigner, released on 14 June 1991 by Atlantic Records.
 Recorded at several different studios across the state of New York and England, and produced by Terry Thomas and Mick Jones, it was the only album with lead singer Johnny Edwards.
 He replaced original lead singer Lou Gramm after the latter had parted company in 1990.
 "Unusual Heat" was the last album to feature bass guitarist Rick Wills, who joined the band in 1979, and drummer Dennis Elliott, who was a founding member. Steven Page
Steven Jay Page (born June 22, 1970) is a Canadian musician.
 Along with Ed Robertson, he was a founding member, lead singer, guitarist, and a primary songwriter of the music group Barenaked Ladies (BNL).
 He left the band in 2009 to pursue a solo career. Barenaked Ladies
Barenaked Ladies (often abbreviated BNL or occasionally BnL) is a Canadian rock band.
 The band is currently composed of Jim Creeggan, Kevin Hearn, Ed Robertson, and Tyler Stewart.
 Barenaked Ladies formed in 1988 in Scarborough, Ontario (now incorporated into the City of Toronto) as a duo of Robertson and Steven Page.
 Brothers Jim and Andy Creeggan joined at the end of 1989, and Stewart was added in 1990 while Andy was on hiatus from the group.
 Andy departed permanently in 1995 citing musical differences and was replaced by Hearn.
 Page left in 2009, leaving the group as a quartet.