This question is an archetypal example of a multi linear game. We should create a two layer game with one layer representing the artists and another representing the musicians. This would be spaced over five slots.
Art __ __ __ __ __ Mus __ __ __ __ __ 1 2 3 4 5
As far as artists go we know that J-K-L
As far as musicians go we know T-V-W (W cannot be fourth)
O and Z must be together, while N and Y cannot.
Most of the inferences come from within the local questions. But using this multi linear setup should be a good start to visualizing the game well. Nevertheless a tough game.
Best of luck. Please let me know if you have any other questions or would like me to elaborate further.