Marko Hietala

On 18 June 2022, Northern Kings made a comeback that ended their 12-year hiatus and Hietala's 17-month break from the public. The band played at the 'Tuhdimmat Tahdit festival' in Nokia, Finland. Hietala later in an interview, stated that he has not made contact with the members of Nightwish since his departure from the band in January 2021, and expressed uncertainty that he will be returning to Nightwish.

On 12 January 2021, Hietala announced his withdrawal from the public eye and departure from Nightwish. On 22 January 2021, Swedish symphonic metal band Therion released a music video for the song "Tuonela" that featured Hietala.

In 2020, he participated in and won the Finnish edition of Masked Singer.

Hietala released his first solo album Mustan sydämen rovio in May 2019. He released the album under his birthname Marko Hietala and will be using the name also in his other projects in the future. Hietala has described his solo material as "hard prog". An English version of the album, titled Pyre of the Black Heart (Nuclear Blast), followed in January 2020. Joining him on the albums are drummer Anssi Nykänen, keyboardist Vili Ollila and guitarist Tuomas Wäinölä with whom he also toured in Finland in the summer and autumn of 2019. The band embarked on a European tour in February 2020.

Hietala has two children with his ex-wife Manki, twin boys Antto and Miro. He and his family currently live in Kuopio, Finland. When he is not touring, he enjoys reading books, playing video games, and watching movies. He especially likes fantasy, horror and science fiction books. In 2016, a Finnish newspaper reported that Hietala had filed for divorce. In August 2018 he married Camila Cavalcanti.

He is also a member of the supergroup Northern Kings, and portrayed one of the main characters in Ayreon's 2013 album The Theory of Everything.

On 14 August 2013, Hietala was the first singer to be confirmed by Arjen Lucassen to guest on Ayreon's new album The Theory of Everything. In 2017 he joined Ayreon on stage for three shows at 013 Poppodium in Tilburg, the recording of these shows was later released as Ayreon's live album Ayreon Universe – The Best of Ayreon Live.

On 1 April 2010 it was said that Hietala would leave the band to concentrate on a choir career. This was identified as an April Fool's joke, but was also a reference to his participation in Kuorosota (the localized Finnish version of Clash of the Choirs) in 2010. Hietala was the master of the Kuopio choir in the program's second season. He came second in the contest, losing in the finals to the Joensuu choir, headed by pop rock singer Ilkka Alanko. Tarot's single "I Walk Forever", from the Gravity of Light album, was performed for the first time by Hietala, Tommi Salmela and the Kuopio choir during Kuorosota 2010; other songs performed included "The Phantom of the Opera", which Hietala has covered with Nightwish as well.

In June 2010, Hietala joined the heavy metal supergroup HAIL! on two occasions, performing Black Sabbath's Neon Knights with Ripper Owens, Andreas Kisser, James LoMenzo and Paul Bostaph at two of their shows in Finland.

In March 2009, Hietala joined the band Sapattivuosi. They cover Black Sabbath songs in Finnish. In this band, however, Hietala does not play bass; he only performs vocals.

During Nightwish's shows, Turunen would take a break halfway through the set. Before Hietala joined the band, the band would perform an instrumental song during this time. After Hietala joined the band, they performed covers of well-known songs, with Hietala singing the lead vocal part in this break. The band has performed Ozzy Osbourne's "Crazy Train", W.A.S.P.'s "Wild Child", Dio's "Don't Talk to Strangers", Megadeth's "Symphony of Destruction" and Pink Floyd's "High Hopes". Some of these songs have been put up for sale as well on various Nightwish album releases. Following Turunen's departure from Nightwish, Hietala was much more involved with the production of Dark Passion Play, which was released in September 2007. He sang some songs, completely, and wrote the music for the song "The Islander", on which he also plays acoustic guitar instead of bass. Hietala is also credited alongside Holopainen for co-writing the song "The Crow, the Owl and the Dove" from Nightwish's 2011 album, Imaginaerum.

Hietala joined Nightwish in 2001 when Tuomas Holopainen and the band's manager called him and said that there would be a place in the band for a vocalist and a bass player. Century Child was his first Nightwish album, following the departure of previous bassist Sami Vänskä. He was a prominent guest musician in Delain, a project involving many members of the gothic and symphonic metal community. He also participated in the recording of Invitation, by Altaria, providing backing vocals. Hietala has also been part of the bands Sinergy and Northern Kings.

While on tour with Tarot in 1998, Marko had met the members of the band Nightwish in Siilinjärvi as they were an opening act for his band. Marko recalled having watched their performance: "I watched their show and thought their music was actually quite good at times. They had all this force and drama, so maybe some day they would successfully combine the two. But goddamn, they looked absolutely horrible on stage. Shorthaired guys just standing there – Tarja was a pretty girl but just as petrified, shrieking in the middle of the stage in her leather pants. Honestly, I assumed them to be just a momentary fad and thought they will fade away after six months or so. Luckily, of course, I was so wrong."

Marko Hietala was born in Kuopio, and is the youngest child of the Hietala family. Hietala lived in Tervo until the age of 15, after which he moved to Kuopio to study classical guitar, vocals and musical theory in high school. In 1984, he and his brother Zachary formed the heavy metal band Tarot under the name Purgatory. In 1986, Tarot received a deal for their first album and went on tour. Before becoming a full-time musician, he worked as a live and studio sound engineer.

Marko Tapani "Marco" Hietala (born 14 January 1966) is a Finnish heavy metal vocalist, bassist and songwriter. Internationally, he is best known as the former bassist, male vocalist and secondary composer to Tuomas Holopainen, of the symphonic metal band Nightwish. He was also the vocalist and bassist as well as composer and lyricist for the heavy metal band Tarot.