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- Kaegi, Werner
- Kafejian, Sérgio
- Kagel, Mauricio
- Kahn, Frédéric
- Kahre, Andreas
- Kaiser, Henry
- Kalantzis, Ioannis
- Kalx
- Kammerer, David
- Kang, Sukhi
- Kaplán, Adolfo
- Kapotte Muziek
- Karkowski, Zbigniew
- Karlsson, Erik Mikael
- Karpen, Richard
- Katsufuji, Tamako
- Katzer, Georg
- Kaufmann, Dieter
- Kawamoto, Hideko
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- Keane, David
- Keller, Damián
- Kergomard, Henri
- Kernicke, Nina
- Kessler, Thomas
- Kesten, Christian
- Kilshaw, Simon
- Kim, Suk-Jun
- Kimura, Mari
- Kisselev, Anatoly
- Kleinsasser, William
- Kleinsinger, George
- Kobayashi, Yota
- Kober, Matthew
- Koenig, Gottfried Michael
- Kokoras, Panayiotis
- Kolman, Peter
- Komsomolsk
- Konkin, Michael
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- Konttinen, Mikael
- Koonce, Paul
- Kosk, Patrick
- Kotoński, Włodzimierz
- Kox, Hans
- Kozminchuk, Stefan
- Krapels, Nicholas
- Krebs, Kevin M
- Kristian, David
- Kristoff K.Roll
- Kröpfl, Francisco
- Krüskemper, Stefan
- Kubin, Felix
- Kubisch, Christina
- Kuljuntausta, Petri
- Kunst, Jos
- Küpper, Leo
- Kusnir, Eduardo
- Kwi, Slavek