Julian & Roman Wasserfuhr (B.G. Alonso, O. Rehmann, D. Rynkowski, K. Yamagami, E. Bayer, G. Wasserfuhr)
Julian & Roman Wasserfuhr (Jörg Brinkmann - cello)
Julian & Roman Wasserfuhr (L. Danielsson, A. Kjellberg, I. Sand, M. Lindgren, N. Landgren)
Julian & Roman Wasserfuhr feat L. Danielsson & W. Haffner
Julian Lage (S. Colley, K. Wollesen)
Julio Resende (B. Chaveiro, A. Rosinha, A. Frazao, Lina)
Julio Resende Fado Jazz
Julo Fujak & kaleidoSONICope
Jun Miyake
Junk Genius (B. Goldberg, J. Schott, T. Dunn, K. Wollesen)
Jürg Wickihalder / Chris Wiesendanger
Jürg Wickihalder Overseas Quartet (A. Succi, M. Zubek, K. Zubek)
Jürgen Friedrich (H. Chisholm, A. Kaufmann, J. Hebert, J. Hollenbeck, Sequenza String Orchestra)
Jürgen Seefelder (T. Stabenow, G. May)
Justin Adams & Mauro Durante
Kadri Voorand
Kalle Kalima / Knut Reiersrud (P. Donkin, J. Black)
Kamasi Washington
Kamikaze Ground Crew (S. Bernstein, R. Carney, J. Cressman, D. Frankel, B. Lipton, G. Leishman, D. Wieselman)
Karen Francis feat. N. Simmons, C. Bridgewater & C. Lundy
Kari Sal (A. Bałdych, V. Pohjola, P. Chęcki, M. Zaborski, P. Kaczmarczyk, M. Kapczuk, K. Szmańda)
Karim Ziad (N. Le, Bojan Z., L. Marthe, J-P. Rykiel)
Karin Krog (S. Kuhn, D. Finck, B. Drummond)
Karl Berger Orchestra (J.L. Matinier, E. Rava, E. Reijseger, I. Sertso, A. Shilkloper, B. Konrad, M. Abrams, B. Elgart)