Misc: What's the American term for a flat?

Questions

Classical Music : Schumann's wife hung around him after her husband Robert Schumann died.?

Classical Music : The Love Theme from Elvira Madigan is this number piano concerto.?

Classical Music : This composer was a pupil of Beethoven & a teacher of Liszt.?

Classical: Bach's Two & Three part inventions are a primer for this opus.?

Classical: Berlioz was a proficient player of only this instrument.?