Which classical composer authored 'The Blue Danube' waltz?

Johann Strauss II

Who plays the antagonist Hans Landa in "Inglourious Basterds"? What girl group was Victoria Beckham a member of? What Hungarian Christmas sweet treat is a rolled pastry filled with walnuts or poppy seeds? Who originally owns the mystical book called the Darkhold? Which team relocated to Oklahoma City and became the Thunder?