MUSIC
How many sharps or flats are in the following Keys:
1.C major:
2. D major :
3. E major :
4. G minor :
5. Bb major:
6. D minor :
7. B minor :

The opening section sounds marchlike, with accented beats and alternations between instrumental groups. eventually, a total change of character marks a short, new section. at approximately which time interval from the beginning does this appear?