Question: Both Till Lindemann and Mikael Stanne have been vocalist in bands, who has been vocalist in more bands?

Context articles: Werner Lindemann
Vengeance Descending (Nightrage album)
Of Chaos and Eternal Night
Till Lindemann
Lindemann (band)
Mikael Stanne
Niklas Sundin
Skydancer (Dark Tranquillity album)
Dark Tranquillity discography
Fredrik Johansson (musician)

Werner Lindemann (1926–1993) was a German writer and poet.
 Werner is also recognized as the father of Till Lindemann, the lead vocalist in the popular German heavy metal band Rammstein.
Vengeance Descending is a double CD reissue by the Greek/Swedish melodic death metal band, Nightrage.
 It was released by Century Media Records on November 19, 2010.
 The Sweet Vengeance disc features the bonus track "Gloomy Daydreams" which is a demo version from either their first or second demo which was only for Japanese releases.
 The Descent into Chaos disc features the song "Black Skies" which was also the Japanese bonus track for that album.
 This disc also comes with the previously unreleased track "Gallant Deeds" which was sung entirely by Mikael Stanne.
Of Chaos and Eternal Night is an EP by the Swedish melodic death metal band Dark Tranquillity.
 It includes a re-recorded version of the "Skydancer" track; "Alone", with Mikael Stanne's vocals instead of Anders Fridén's.
 The EP became a reissue as Skydancer/Of Chaos and Eternal Night.
 Fredrik Nordström contributes keyboards on the EP as well as producing it.
Till Lindemann (] ; born 4 January 1963) is a German singer, songwriter, musician, actor, poet, and pyrotechnician.
 He is best known as the lead vocalist and frontman of the German Neue Deutsche Härte band Rammstein.
 He is noted for his muscular stature, unique stage performances (including the use of pyrotechnics and a specific move known as "The Till Hammer"), and bass voice.
 He is also known for his lyrics, some of which have caused controversy.
 Worldwide, Rammstein has sold over 45 million records, with five of their albums receiving platinum status.
Lindemann is a German/Swedish industrial metal supergroup featuring lead vocalist Till Lindemann of Neue Deutsche Härte band Rammstein, along with multi-instrumentalist Peter Tägtgren of Swedish death metal band Hypocrisy and industrial metal project PAIN.
 Tägtgren defines it as "a baby between Rammstein and PAIN – at least it's a mix of Rammstein vocals and PAIN music."
Bengt Mikael Stanne (born 20 May 1974) is the vocalist & one of the lyricists (also previously rhythm guitarist) for the Swedish melodic death metal band, Dark Tranquillity and the ex-vocalist for Swedish power metal band HammerFall.
Niklas Sundin (born 13 August 1974 in Sweden), is a musician best known as the guitarist of bands Dark Tranquillity and Laethora.
 He is one of only two members (the other being drummer Anders Jivarp) to maintain a role as guitarist of Dark Tranquillity, unlike others in the band who have switched their roles or are not in the band anymore.
 He also wrote some of the lyrics for the first three and recent two Dark Tranquillity albums (since "Projector" and until "Fiction" lead singer, Mikael Stanne, has written all of Dark Tranquillity's lyrics) and In Flames' album "The Jester Race", and continued to translate In Flames vocalist Anders Fridén's lyrics from Swedish to English for the next few albums while Anders worked to become more proficient in English.
Skydancer is the debut studio album by Swedish melodic death metal band, Dark Tranquillity.
 This release was the last recorded output to feature vocalist Anders Fridén, later of In Flames, who was fired and replaced by then rhythm guitarist, Mikael Stanne.
 Incidentally, Mikael Stanne was the lead vocalist on the first In Flames studio album, "Lunar Strain".
The following is the discography of Dark Tranquillity a six-piece Swedish Melodic death metal band which was formed in Gothenburg in 1989 as Septic Broiler.
 They are one of the longest-standing bands from the original Gothenburg metal scene.
 As of 2013, their formation consists of vocalist Mikael Stanne, guitarists Martin Henriksson and Niklas Sundin, keyboardist Martin Brändström and drummer Anders Jivarp.
Fredrik Johansson is a former member of melodic death metal band Dark Tranquillity for almost six years.
 He joined in 1993 after the band's vocalist at the time, Anders Fridén, left the band and their rhythm guitarist Mikael Stanne took the vocalist role to solely focus on it, leaving an empty rhythm guitarist spot, which Fredrik took.
 Prior to the release of "Projector" in 1999, he was asked to leave Dark Tranquility due to a lack of commitment to the band, stemming that he wanted to become a family man.