As a beginner on tenorsaxophone (in my 4th year of playing) I practice long tones almost every day, but never succeeded to play every note in tune. Especially E, F, Fsharp, G, Gsharp in the middle register. Recently I purchased a BetterSax burnin mouthpiece 6* and BetterSax jazz cut reeds 2,5. For the first time ever I can play long tones in tune over the entire range of the saxophone! Playing with this mouthpiece is very comfortable and gives a very good sound. Purchasing a burnin mouthpiece was an excellent decision!