via Wikipedia infobox
Epica is a Dutch symphonic metal band founded by guitarist and vocalist Mark Jansen after his departure from After Forever. Originally formed as a symphonic metal band with gothic influences, Epica later incorporated strong death metal elements into their sound. Starting with their third album, progressive metal influences also became evident. Additionally, the band often incorporates thrash metal and groove metal riffs, black metal elements (particularly in drumming techniques), power metal sections, and influences from Arabic music. Some songs also incorporate electronic elements, djent transitions, and folk metal melodies inspired by Middle Eastern, Chinese, and Celtic traditions.
Epica is also known for its attention to vocal melodies, which contrast with the heavy instrumentation by weaving catchy, sophisticated, and emotionally expressive lines. The band's sound prominently features a combination of soprano vocals, performed by Simone Simons, and growled vocals, provided by Mark Jansen. They primarily write their own lyrics, which explore philosophical, psychological, spiritual, moral, scientific, environmental, socio-political, global, topical, and personal themes. Epica is also recognized for its extensive use of orchestral arrangements and operatic choirs.
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