Misc: Which European capital city's name translates into English as "Merchants Haven"?

Questions

Name the composer who tried to commit suicide by jumping in the Rhine. ?

What composer was famous for his Polonaises ?

Which century did Johann Sebastian Bach die in ?

What does the term "equal temperament" describe ?

How many symphonies did Beethoven write{Beethoven was born in Bonn, Germany in 1770. He died inVienna, Austria in 1827.} ?