Question: Are Juha-Pekka Leppäluoto and David Vincent both musicians ?

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David Vincent (actor): David Vincent is an American voice actor and producer who provides voices for many popular animation and video game titles.  David is known for voicing numerous roles including Grimmjow Jaegerjaquez in "Bleach", Senketsu in "Kill la Kill", and Gilgamesh in "Fate/zero".  In video games, he can be heard as Robin in "Fire Emblem Awakening" and "Super Smash Bros. for Nintendo 3DS / Wii U" (2016 People's Choice Award winner), and "", Marshall Law in the "Tekken" series, T. Hawk in "Super Street Fighter IV," and Jin Kisaragi and Hakumen in the popular Arc System Works fighting game series "BlazBlue."  One of his first voice roles was a guest character in a "" episode.

Jarkko Ahola: Jarkko Kalevi Ahola (Toijala, 24 August 1977) is a performing artist, a composer and a singer.  He is the vocalist and bass player and one of the three songwriters of the band Teräsbetoni.  He is also a member of a Finnish symphonic metal cover supergroup Northern Kings together with Marco Hietala from Nightwish, Tarot and Sapattivuosi, Tony Kakko from Sonata Arctica and Juha-Pekka Leppäluoto from Charon and Harmaja.

Hordes of Zombies: Hordes of Zombies is the third studio album by American deathgrind band Terrorizer.  It was released on February 28, 2012, through Season of Mist.  This is Terrorizer's first album since 2006's "Darker Days Ahead" and the only one to feature vocalist Anthony Rezhawk and guitarist Katina Culture and the last album to feature bassist David Vincent.

Dave Hajek: David Vincent Hajek (born October 14, 1967 in Roseville, California) is a former infielder in Major League Baseball who played from 1995 to 1996 for the Houston Astros.

Lust Stained Despair: Lust Stained Despair is the second album by the Finnish gothic metal band Poisonblack.  Provisionally titled The Music For the Junkies by Poisonblack frontman Ville Laihiala, the album was released in August 2006 after a three-year hiatus due to the search for a new singer (after the departure of Juha-Pekka Leppäluoto).

Homiletic and Pastoral Review: Homiletic and Pastoral Review is a religious journal, the first Catholic Clergy magazine to appear in the United States and has been the leading journal of its kind for over a century.  The editor emeritus is the Rev. Kenneth Baker, S.J.; current editor is the Rev. David Vincent Meconi, S.J., a professor of patristic theology at St. Louis University.  Founded over one hundred years ago, "Homiletic and Pastoral Review" is one of the most well-respected pastoral journals in the world.  The journal is carried by 191 university libraries.  It features contributors such as James V. Schall, S.J., Alice von Hildebrand, Paul Vitz, Kenneth Whitehead, Donald DeMarco, Regis Scanlon, and John F. Harvey.

Harmaja (band): Harmaja are a Finnish acoustic rock group founded by vocalist Juha-Pekka Leppäluoto in 2007.  Their first album, "Harmaja", was released on February 18, 2009, and entered the Finnish national chart at position 14.

Northern Kings: Northern Kings was a Finnish symphonic metal cover supergroup, made up of four well known musicians: Jarkko Ahola from Teräsbetoni, ex-Dreamtale, Marco Hietala from Nightwish and Tarot, Tony Kakko from Sonata Arctica and Juha-Pekka Leppäluoto from Charon and Harmaja.

David Vincent: David Justin Vincent (born April 22, 1965), also known as Evil D, is an American musician who is best known as the former lead vocalist and bassist for the death metal band Morbid Angel as well as the bassist for Genitorturers.  His early influences are Kiss and Alice Cooper.

Juha-Pekka Leppäluoto: Juha-Pekka "JP" Leppäluoto (born 15 November 1974 in Raahe, Finland) is a Finnish musician.  He was in the band Charon until the summer of 2011 as a vocalist and songwriter and currently he is in the band Harmaja as a vocalist, guitar player and songwriter and also in the band Northern Kings as a vocalist.  He also provided vocals for the first release from the band Poisonblack, which featured members from several other Finnish rock bands.

Supporting paragraphs: Juha-Pekka Leppäluoto David Vincent
Answer: yes