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Jane Siberry (herself, OK and art pop) (but really she's her own genre)
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Jenner (speed metal, thrash metal)
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Jinjer (progressive metalcore)
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Joan Jett & The Blackhearts (legend)
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Kate Bush (art pop, progressive pop)
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Kobra and the Lotus (classic metal, hard rock)
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Krith Nazgul (melodic blackened death metal)
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Leah (symphonic celtic folk metal)
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Lothloryen (symphonic gothic power metal)
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Lotus of Darkness (raw blackened folk metal)
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Loura Lou (pop) (is actually primarily an actress but a pretty good singer who collabs with loads of others)
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Lucid Sins (symphonic gothic metal)
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Mutilasi Jelangkung (death metal, thrash metal)
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Myrkur (Nordic blackened folk)
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Mystica Girls (melodic metal)
We're half-way through the alphabet!