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1. 'Undefined' is the artist that last.fm displays in the event of an error where the correct artist fails to be fetched. 2. Undefined is a Spanish progressive death metal band. The first Undefined EP is called Saturnism Unfolds and is avalaible to download at http://www.definethenoise.com. "Of Xenoglossy and Saturn", their first LP, was released in early 2008. A breakthrough album in the Spanish metal scene. 3. UnDeFiNeD is also a Belgian underground band, bringing a variety of urban styles. .