Question: Who, Mark Morriss and Jonne Järvelä, is the vocalist/guitarist of the Finnish band Korpiklaani?

Context paragraphs:
Mark Morriss: Mark James Morriss (born 18 October 1971 in Hounslow, Middlesex) is an English singer-songwriter, best known as the frontman for The Bluetones.  He is the older brother of bandmate and bass player/illustrator Scott Morriss, and is also pursuing a solo career.

Scott Morriss: Scott Edward Morriss (born 10 October 1973 in Wandsworth, London) is an English bass player and illustrator, best known as a member of The Bluetones.  He is the younger brother of frontman Mark Morriss, with whom he also played with as backing group, The Mummys.

Manala (album): Manala is the eighth studio album by the Finnish folk metal band Korpiklaani.  It was released on August 3, 2012 through Nuclear Blast.  "Manala" translated from Finnish to English is "Underworld".

The Bluetones: The Bluetones are an English indie rock band, formed in Hounslow, Greater London, in 1993.  The band's members are Mark Morriss on vocals, Adam Devlin on guitar, Scott Morriss on bass guitar, and Eds Chesters on drums.  A fifth member, Richard Payne, came on board between 1998 and 2002.  The band was originally named "The Bottlegarden".

Juho Kauppinen: Juho Kauppinen (born August 4, 1986) is the former accordionist of the Finnish band Korpiklaani.  He has also been in Falchion, which was a Finnish Death Metal band, in which he was the vocalist and lead guitarist.

Beheading the Liars: Beheading the Liars is Skiltron's second studio album, recorded in January 2008 at La Nave de Oseberg studios.  The album features very special guests: Steve Ramsey, Kevin Ridley, and Georgina Biddle from Skyclad, Jonne Järvelä from Korpiklaani, and Patrick Lafforegue and Patrcie Roques from Stille Volk, plus the collaboration of Seoras Wallace, from Clan Wallace.

Ígéret: Ígéret is the seventh studio album of the Hungarian folk metal band Dalriada.  This is their first album that includes a song not only in Hungarian, since "Leszek A Hold" has Finnish verses, sung by Jonne Järvelä of Korpiklaani.  The album title means "promise" in Hungarian.

Jonne Järvelä: Jonne Järvelä (born June 3, 1974 in Vesilahti) is the vocalist/guitarist of the Finnish band Korpiklaani.  He is known in the folk metal scene for his yoiking and contributed the yoik on the Finntroll album, "Jaktens Tid".  He was once a member of the Sami music group Angelin tytöt.  In 2011 he appeared in the song "Humppa Is My Neighbour" by the Russian band Troll Bends Fir and in the song "Leszek a Hold" by the Hungarian band Dalriada, in 2012 he played on the Varg Song "A Thousand Eyes" of the Guten Tag album.

Hunka Lunka: Hunka Lunka is the only studio album by the Finnish folk music band "Shamaani Duo", who later changed their name to "Shaman", and later to "Korpiklaani".  This album featured the original lineup of the band, which consisted of guitarist/singer/songwriter Jonne Järvelä and singer Maaren Aikio.  Aikio departed following the release of this album, and the band morphed into "Shaman".

Shamániac: Shamániac is the second and final studio album by the Finnish folk metal band "Shaman", before they changed their name to "Korpiklaani".  The album has been produced by the Shaman frontman Jonne Järvelä and Samu Ruotsalainen, the drummer of the Finnish folk metal band Finntroll.

Supporting paragraphs: Mark Morriss Jonne Järvelä
Answer: Jonne Järvelä