Obscuro music (also called outsider music) is not specifically limited to one style, but instead encompasses music that cannot neatly be classified into other genres. Therefore, obscuro cannot be precisely defined and the website Allmusic describes it as "a nebulous category that encompasses the weird, the puzzling, the ill-conceived, the unclassifiable, the musical territory you never dreamed existed."http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:11378 Obscuro music is generally very rare and virtually unknown outside music collectors.