Arjen Anthony Lucassen (born 3 April 1960) is a Dutch singer, songwriter, multi-instrumentalist musician and record producer, best known for his long-running progressive metal/rock opera project Ayreon. Lucassen started his career in 1980 as the guitarist and backing vocalist of Dutch heavy metal band Bodine as Iron Anthony, before joining Vengeance in 1984. After eight years he left the band, wanting to go into a more progressive direction, and released two years later an unsuccessful solo album entitled Pools of Sorrow, Waves of Joy under the nickname Anthony.

In 1995, Lucassen released an album uncredited to any artist called Ayreon: The Final Experiment, in which he sang, wrote every song and played most of the instruments. The album led to the creation of Ayreon; despite being relatively unknown at first, the project gained notable attention and praise with the release of its third album, Into the Electric Castle, establishing Lucassen as a notable composer of rock operas. Following Ayreon's success, Lucassen has been involved in many other projects: he is the creator, composer and current guitarist/keyboardist of Star One, Guilt Machine, and The Gentle Storm, and the creator and former guitarist of Ambeon and Stream of Passion. He composes and writes most of his songs, but leaves the lyrics to his musical partners in some of his projects.

Lucassen plays a wide variety of instruments: his main instruments are guitar and keyboards, but he also plays bass, banjo and many others. Overall, in his career and including all his bands and projects (as principal instrumentalist/creative force or as a member), Lucassen has released twenty-six studio albums, four live albums, two EPs and seventeen singles. He has also made many minor participations alongside various artists including Shadow Gallery, After Forever, Within Temptation and Avantasia, and appears in over 50 albums.

Since the creation of Ayreon, Lucassen progressively made a name for himself under rock and metal reviewers, with many critics calling him a "genius", and praising his composition abilities and originality. In his review of 01011001, AllMusic reviewer Cosmo Lee stated "Music this over the top almost defies criticism. Reviewing it is like reviewing the world's tallest building. It doesn't care; it just goes on and on."

In 2025, Lucassen was knighted as a Member of the Order of the Netherlands Lion.

Career Lucassen's love of music was sparked in the '60s, when he became a big fan of The Beatles. He decided to learn guitar when he heard Ritchie Blackmore playing in Made in Japan. One of his first bands was called Mover, which he joined around the age of 18.

Bodine (1980–1984)

In 1980, Lucassen joined Bodine via their drummer Gerrard Haitsma, who was also the drum teacher of Mover's drummer. Under the nickname Iron Anthony, he was featured on their second album, Bold as Brass (1982), and their third and final album, Three Times Running (1983).

Lucassen later recalled about his years with Bodine: "on one side they were good musicians, extremely good musicians, the best drummer in Holland (Gerard Haitsma), an incredible guitar player and a very steddy [sic] bass player (Armand van der Hoff). And I actually learned how to play there, how to play very tight, how to play in tune, you know, to play solo not just fast but to play one note and do it good. But on the other hand, they were kind of boring guys, they were all 10 years older than me, they didn't like partying and stuff. And in those days I was young, I was 20, after the girls and after the party, you know. So it was a bit boring. And another problem in that band was that they didn't like melody, they were in love with AC/DC and stuff like that. And I always liked melodic music, already in those days I was into prog music. So I didn't like to be there, I wrote songs but they were just a little part of me."

In 1984, Lucassen left Bodine to join Vengeance; they disbanded shortly after.

Vengeance (1984–1992)

In 1984, the newly created band Vengeance played as supporting act for Bodine. When Lucassen, who had been impressed by their performance, was later contacted by the band to ask if he knew any potential replacement for their guitarist who had just left, he proposed himself and joined the band, leaving Bodine.

Regarding their original self-titled album released in 1984, Lucassen stated in a 2002 interview that the album was "horrible", adding "The songs were mostly finished when I joined the band. I think I wrote just two songs for that album and it was recorded very cheap, the sound is bad and the songs are not that good. So it's not a very strong album although you can already hear the potential". The band later established themselves as one of the most successful bands of the Netherlands at the time. He also recalled a concert in Germany cancelled at the last moment because "after the first night Vengeance wrecked the hotel, it was like $10,000 damage. We were not allowed to leave Germany, they took our equipment... so that was really sex, drugs and rock'n'roll!"

In 1989, the band was forced to fire their lead vocalist Leon Goewie, who was, according to Lucassen, "really crazy on stage. The only problem was that he was also crazy offstage. But he also liked to have a stiff drink now and then, if you know what I mean". Vengeance found little success with their new vocalist Ian Parry, and disbanded in 1992 after a surprisingly successful farewell tour.

While Lucassen pursued his solo career, Vengeance's label released The Last of the Fallen Heroes, promoted as a new studio album but actually a compilation of unfinished demos, in 1994. Goewie, who was heavily struggling as a musician after being fired from the band, later contacted Lucassen, asking him to write him songs. Lucassen wrote two songs, which were later featured on a new Vengeance album, Back from Flight 19, in 1997; despite participating to this new album, Lucassen did not re-join Vengeance. He later stated about Back from Flight 19 "I'm not so proud of that album. There's a couple of good songs but it's definitely not Vengeance."

Solo debuts (1992–1995) After his departure, Lucassen first tried to create a new band, Planet Nine. However, according to his words in The Final Experiment book, "nobody even wanted to touch it". He released his first solo album, Pools of Sorrow, Waves of Joy, under the name "Anthony" in 1994. It was a commercial flop; according to Lucassen, "people didn't understand it. It wasn't hard rock, it wasn't prog or something. People thought, 'What's that he is doing now? He must be crazy!

Remembering this period, Lucassen stated "it was the period in my life when my girlfriend broke up with me, Vengeance broke up and I had no more record deal. So it was a horrible time".

Ayreon's debut and fame (1995–2000)

After his first unsuccessful solo album, Lucassen began recording The Final Experiment, which was released in 1995 as Ayreon: The Final Experiment on a small Dutch label, Transmission Records, with no artist noted. The album featured a wide array of musical styles, ranging from folk to progressive metal. It was soon followed by Ayreon's first single, "Sail Away to Avalon".

One year later, Lucassen decided to continue the project started with The Final Experiment, using Ayreon as the project's official name, and released a second album titled Actual Fantasy. The album later became the exception in Ayreon's discography, as the only Ayreon release that does not feature a single overarching story concept. The single "The Stranger from Within" from this album was also released. It was a relative commercial failure. Lucassen decided to make one more album, and to stop Ayreon if this one did not become a commercial success.

The same year, Lucassen, tired after the complexity of Ayreon, decided to do "something really simple, like punky or heavy versions of 1960s songs" and released Strange Hobby, a cover album without artist name or any personnel credited at the idea of the record company to make people curious about the record. According to Lucassen, "it didn't work because people knew how it was and they weren't so interested, so it was another flop. But I think it's good. Maybe the songs are too much alike, too short and after 10 songs you think, 'Oh, that's it?!' But I do like that album and I'm not ashamed that I did it."

In 1998 the commercially successful and critically acclaimed Ayreon album Into the Electric Castle was released. It is still currently considered one of the best albums in Lucassen's career. The good reception to the album made Lucassen decide to continue the project Ayreon.

The next two Ayreon albums, Universal Migrator Part 1: The Dream Sequencer and Universal Migrator Part 2: Flight of the Migrator, considered as two parts of the same story, were released simultaneously on 20 June 2000. The two sold well and were received positively, despite Part 1 being considered superior to Part 2 by most critics. "Temple of the Cat" from Part 1 was released as a single the same year, and again the following year in an acoustic version.

First side projects; Ambeon and Star One (2000–2003) In 2000 Lucassen created Ambeon, his first side project since the creation of Ayreon, to explore a softer style of his music. The band consisted of him as composer and principal instrumentalist and then 14-year-old Astrid van der Veen as singer and lyricist. They released their only album Fate of a Dreamer in 2001, along with the single "Cold Metal". The album had a limited success. Ambeon's atmospheric sound draws from a wide variety of influences, including celtic, gothic, progressive music, and dark ambient. The songs on Fate of a Dreamer were mostly composed of different remixed pieces of songs from Ayreon albums. The name of the band was a play on the words ambient and Ayreon. The album went out of print shortly after its release and was considered rare, until Lucassen re-released it in December 2011, with the addition of a bonus CD containing previously unreleased tracks. Lucassen was not satisfied with the final result, stating "it's a bit cold for me. It's too electronic, a bit too much computers... And I didn't know how well Astrid could sing for I didn't know her and she didn't know me".

Van der Veen retired from music after the release of Fate of a Dreamer, leading to Lucassen stating that there'd most likely be no future Ambeon albums, despite the fact he would have liked it. Van der Veen eventually released a new record for herself in 2012 after a long battle with depression and addiction, but does not seem to intend on performing actively anymore.

In 2002, Lucassen created another side project, named Star One; it is the only side project to date he made more than one studio album with. Star One focused on four singers: Dan Swanö, Russell Allen, Floor Jansen and Damian Wilson; Lucassen played guitar, keyboards and Hammond organ. Their first album, Space Metal, was released in 2002. The album also had limited success, although it was more successful than Ambeon. Live on Earth, the first live album in Lucassen's career which also included Ayreon songs, was released one year later.

The Human Equation and 01011001, Stream of Passion (2003–2008)

Four years after Universal Migrator, Lucassen released Ayreon's sixth album, The Human Equation. It was a commercial success, going No. 7 in the Dutch album charts, and some critics considered the album as Lucassen's best since Into the Electric Castle.)

Special editions of all Ayreon albums were released in 2004 when Lucassen switched label from Transmission to InsideOut Records; The new edition of The Final Experiment featured a bonus disc of newly recorded, semi-acoustic versions of songs from the album, while Actual Fantasy was entirely remixed and partially re-recorded, with the new version being titled Actual Fantasy: Revisited.