Some people really enjoy playing the German card game skat. For 10 points each:
[10e] In this novel, the game of skat represents the love triangle between the protagonist’s parents and Jan Bronski. This Günter Grass novel titled for a musical instrument describes a game of skat involving Oskar Matzerath.
ANSWER: The Tin Drum [or Die Blechtrommel]
[10m] This German composer loved skat so much that the organisers of a festival had to pay the orchestra to lose to him. This composer’s personal struggles inspired his autobiographical tone poem A Hero’s Life.
ANSWER: Richard Georg Strauss [prompt on Strauss]
[10h] This artist’s painting The Skat Players depicts wounded veterans playing a game of skat. This artist also depicted war veterans in the paintings The Match Seller and The Street in Prague.
ANSWER: Otto Dix [or Wilhelm Heinrich Otto Dix]