Misc: movie about 5 teenagers forced to spend saturday at detention.?

Questions

Who wrote most of Mozart's Symphony No. 37, K. 444 ?

Although Mussorgsky wrote Pictures at an Exhibition, whose orchestration of it is usually heard ?

What is the only left handed instrument in the orchestra ?

As a choir boy, Haydn was considered a practical joker. On one occasion, he... ?

Haydn's wife was not exactly a music lover. Her insensitivity really showed when she... ?