Welcome to the wonderful world of Ear Training. With this method, you are guaranteed to sharpen your interval recognition. Ear training is an essential tool both in learning music and playing it. Please read through the PDF document (Wayne's Ear Training Method: The Jazz Kitchen) below before proceeding with the videos if you haven't already.
Note: It is very important that you go through each interval slowly and allow yourself time to react to the sound of each one. I recommend spending 3 days of each interview listening to them 3 times a day (morning, noon and night).