1. How many measures are there in Corelli's Opus 1, No. 11, first movement?
```    COMMAND:     census -k op01n11a.krn
COMMAND:     grep -c '^=[^=]' op01n11a.krn
```
2. How many notes are there in the oboe part from the first movement of Bach's Brandenburg Concerto No. 2 (BWV 1047)?
```    COMMAND:     extract -i '*Ioboe' bwv1047a.krn | census -k
```
3. Which Brandenburg Concerto contains a horn part? Which movements from this concerto don't use the horn?
```    COMMAND:     grep '!!!AIN:.*cor' bwv*.krn
COMMAND:     grep -l '!!!AIN:.*cor' bwv*.krn
ANSWER:      BWV 1046 (Concerto No. 1)
```
4. Which Brandenburg Concerto contains a trumpet part? How long is the longest note played by the trumpet? How long is the shortest note played by the trumpet?
```    COMMAND:     grep -l '!!!AIN:.*tromp' bwv*.krn
ANSWER:      BWV 1047 (Concerto No. 2)
```
```    COMMAND:     extract -i '*Itromp' bwv1047a.krn | census -k
ANSWER:      Longest note is a whole note.
ANSWER:      Shortest note is a 32nd note.
```
5. In Brandenburg Concerto No. 3, which movement contains the greatest number of notes in the string parts? First determine how many movements there are in the third Concerto (BWV 1048):
```    COMMAND:     ls bwv1048*.krn
extract -i '*ICstr' bwv1048a.krn | census -k
extract -i '*ICstr' bwv1048b.krn | census -k
ANSWER:      The first movement has more string notes: 10,417 versus 6,252
```