Using your D'Addario Select Jazz Alto saxophone mouthpiece is easy. First, attach it to your saxophone properly. Make sure it fits snugly but don't force it. When you play, position your lips and tongue gently around the mouthpiece for the best sound. For cleaning, after each use, wipe the mouthpiece with a soft cloth to remove moisture and debris. Store it in a protective case to prevent damage. Don't expose it to extreme temperatures or harsh chemicals. If you notice any wear or damage, it's time to check with a professional or consider a replacement.