Misc: In what sport is the Davis Cup awarded?

Questions

Who composed the music for A fistful of Dollars, For a few dollars more and The good the bad and the ugly?

Which country celebrates nov 2nd as a National holiday - The day of the Dead?

On the stress scale, what rates the highest?

Which Oscar winning song came from the film The Thomas Crown Affair?

Which Spanish painter painted the picture known as The Rokeby Venus?