1. Set your tongue position. Your tongue should be relaxed and at rest in the back of your mouth. The tip of your tongue should be slightly curled upwards, and the sides should be touching the back of your upper front teeth.
2. Blow. Start by blowing air into the oboe in a steady stream.
3. Flutter your tongue. While you are blowing air, flutter your tongue by curling it up and then flicking it back down against the roof of your mouth. This should produce a double tongue effect.
4. Practice. The key to learning how to double tongue is practice. Start by practicing slowly and gradually increase your speed as you get more comfortable.
Here are a few tips for double tonguing on the oboe:
* Relax your tongue. The more relaxed your tongue is, the easier it will be to flutter it.
* Don't press your tongue too hard against the roof of your mouth. This can cause your tongue to stick and make it difficult to double tongue.
* Experiment with different tongue positions and air pressures. Every oboist's mouth and tongue are different, so you may need to find what works best for you.
* Practice regularly. The more you practice, the better you will get at double tonguing.