UnScramble this Word: i e l t i s r b?

Questions

The musical term for a fast tempo is: ?

The literal imitation of one melody, instrumental or vocal, by another at a specific time interval is: ?

A Canzone is: ?

Several independent voices, each entering separately with the subject or answer are identifying characteristics of: ?

Which composer was so fastidious in his preparation of coffee that he would actually count out the number of beans per cup ?