They are known for their anti-Christianity, love for Satanist and pagan lore, political irreverence, and penchant for self-parody. Most of their albums are of the Rock Opera type and tell elaborate, often bizarre stories revolving the motifs mentioned above.
Once known as one of the greatest exponents of the metal scene in Spain, they are now easily one of their most divisive bands. The main reasons are their regular stylistic evolution (which has driven them away from their Folk/Celtic roots and into genres as varied as Heavy Metal, Power Metal, Gothic Metal and Industrial Metal in music and aesthetics), their full embracement of commerciality (generally considered a huge no-no among metal fans, even if earned) and their pandering to mainstream media (to the extent of expressing their wish to represent Spain at the Eurovision Song Contest, which was unheard of there for a Spanish band of their kind). Despite all of this, they are still a greatly successful band with an array of Gold and Diamond Discs and a solid place in the Hispanosphere.
Aside from their activities in Mägo, its leader Txus di Fellatio and singer Patricia Tapia have their own bands, Bürdel King and KHY, respectively. They also gave birth to and mentored melodic folk band Celtian, and are the producers of symphonic metal band Débler.
- 1994 - Mägo de Oz
- 1996 - Jesús de Chamberí
- 1998 - La leyenda de la Mancha
- 2000 - Finisterra
- 2003 - Gaia
- 2004 - Belfast
- 2005 - Gaia II: La voz dormida
- 2007 - La ciudad de los árboles
- 2010 - Gaia III: Atlantia
- 2010 - Gaia: Epílogo
- 2012 - Hechizos, pócimas y brujería
- 2014 - Ilussia
- 2015 - Finisterra Opera Rock
- 2019 - Ira Dei
- Txus di Fellatio - drums, percussion, chorus (1988-present)
- Zeta - lead vocals, chorus (2012-present)
- Carlitos - lead guitar (1992-present)
- Frank - rhythm guitar, acoustic guitar (1996-present)
- Mohamed - violin (1992-present)
- Fernando Mainer - bass (2012-present)
- Josema - transverse flute, bagpipes, pito castellano, whistle, bodhran (2010-present)
- Javi Díez - keyboards, accordion, guitar (2012-present)
- Patricia Tapia - vocals, chorus (2007-present)
Former Members (main ones):
- Juanma - lead vocals, chorus (1988-1996)
- José Andrëa - lead vocals, chorus (1996-2011)
- Kiskilla - keyboards, piano (1996-2011)
- Peri - bass (unclear-2011)
Mägo de Oz and their music provide examples of:
- Bazaar of the Bizarre: The lyrics of "El Mercado de las Brujas" ("The Witches's Market").
- Bragging Theme Tune: "H2OZ".
- Circus of Fear: Ilussia.
- Contrasting Sequel Main Character: The band's most known vocalist, José, was a screaming showman that sang for party and life. His replacement, Zeta, is a spiritual chamber musician who sings with a broken heart. This change, naturally, brought a huge controversy.
- Creepy Children Singing: Opus Tenebrae.
- Deal with the Devil: Almost every major album contains one song about a deal with the devil (both "deal" and "devil" can take several forms here) or about evil trying to entice the listener. The most famous ones are "Astaroth", "Diabulus in Musica", "El violín del diablo", "Satanael", "Cadaveria" and "El amor brujo".
- Evil Laugh: Very often in their most devilish songs.
- Gaia's Revenge: They even have a song named that way.
- Heävy Mëtal Ümlaut: On the first a.
- Longest Song Goes Last:
- Mago de Oz ends with "Mago de Oz". (9:16)
- Jesus de Chamberi ends with "El fin del camino" (8:53)
- Finisterra ends with "Finisterra" (15:16)
- Gaia ends with "La Venganza de Gaia" (11:04)
- Gaia II: La Voz Dormida ends with "La Cantata del Diablo - Missit me Dominus" (21:11).
- Gaia III: Atlantia ends with "Atlantia" (19:16)
- Hechizos, pocimas y brujeria ends with "Hechizos, pocimas y brujeria" (8:22).
- The Lost Lenore: The main character of "Xanandra" lost his fiancee and hasn't got over it yet.
- Metal Scream: They were José Andrëa's (and less Zeta's) signature. The song "Gaia" in special features a spine-chilling metal screaming version of a Big "NO!".
- Nature Metal: The spanish Folk Metal band has many songs (and even Concept Albums, the Gaia trilogy) that have natural themes in their songs, especially referent to Gaia's Lament and Gaia's Vengeance (the latter even it's Title Drop for one one song of them).
- Ominous Latin Chanting: "Dies Irae" has the quote "Dies Irae Malleus Malleficarum Est" repeated as a chorus. It is unclear if it pretends to be fake Latin babble or if it is exactly what it means ("The Malleus Maleficarum is the day of wrath").
- Surprisingly Gentle Song: Also roughly one per album. "Love & Oz" was a recopilatory of these.
- Villain Song: "Ángel Caído" and "Astaroth", among many others.