1. Place your left index finger on the bottom hole on the top joint of the clarinet.
2. Place your left middle finger on the top hole on the top joint of the clarinet.
3. Place your left ring finger on the second hole from the top on the top joint of the clarinet.
4. Place your left pinky finger on the third hole from the top on the top joint of the clarinet.
5. Place your right index finger on the bottom hole on the bottom joint of the clarinet.
6. Place your right middle finger on the second hole from the bottom on the bottom joint of the clarinet.
7. Place your right ring finger on the third hole from the bottom on the bottom joint of the clarinet.
8. Place your right pinky finger on the fourth hole from the bottom on the bottom joint of the clarinet.
9. Blow into the mouthpiece of the clarinet.
You should produce a D note.