Educational music worksheet identifying instrument families for students.

I'll solve this problem by identifying the family for each musical instrument listed on the worksheet. The task is to fill in the blanks with the correct letter code: S for Strings, W for Woodwinds, B for Brass, and P for Percussion.

Let me go through each instrument one by one:

1. Trumpet - This is a brass instrument, so it should be labeled "B".
2. Xylophone - This is a percussion instrument, so it should be labeled "P".
3. Violin - This is a string instrument, so it should be labeled "S".
4. Triangle - This is a percussion instrument, so it should be labeled "P".
5. Flute - This is a woodwind instrument, so it should be labeled "W".
6. Oboe - This is a woodwind instrument, so it should be labeled "W".
7. Viola - This is a string instrument, so it should be labeled "S".
8. Cymbals - This is a percussion instrument, so it should be labeled "P".
9. French horn - This is a brass instrument, so it should be labeled "B".
10. Bassoon - This is a woodwind instrument, so it should be labeled "W".
11. Saxophone - This is a woodwind instrument, so it should be labeled "W".
12. Tambourine - This is a percussion instrument, so it should be labeled "P".
13. Tuba - This is a brass instrument, so it should be labeled "B".
14. Glockenspiel - This is a percussion instrument, so it should be labeled "P".
15. Double bass - This is a string instrument, so it should be labeled "S".
16. Clarinet - This is a woodwind instrument, so it should be labeled "W".
17. Timpani - This is a percussion instrument, so it should be labeled "P".
18. Trombone - This is a brass instrument, so it should be labeled "B".
19. Cello - This is a string instrument, so it should be labeled "S".

Now I'll provide the complete solution with all the answers filled in.

The completed worksheet should look like this:

- trumpet: B
- xylophone: P
- violin: S
- triangle: P
- flute: W
- oboe: W
- viola: S
- cymbals: P
- French horn: B
- bassoon: W
- saxophone: W
- tambourine: P
- tuba: B
- glockenspiel: P
- double bass: S
- clarinet: W
- timpani: P
- trombone: B
- cello: S