Misc: who did the popular 1970's tune 'godzilla'?

Questions

"Fur Elise was written in 1810 as a short piano piece by what composer ?

The song "Stranger in Paradise" (1953) was taken from what 19th century Russian composition ?

Name the Ibsen play for which Edward Grieg composed incidental music. ?

Debussy's "Claire de Lune" is taken from what collection of piano pieces ?

In what key is the Moonlight Sonata ?