Hello, trumpet lovers! I sometimes read about players claiming to play with an "open embouchure". When playing or buzzing the parts of the lips that buzz will switch between open and closed with a mean value of "semi open". If the lips donÂ´t close entirely in the "closed" phase, the tone should be leaky and lacking overtones (the strength of overtones actually depend on how fast the lips perform the closed phase). So what does an "open embouchure" mean? * Does it mean that the lips never close entirely, * or maybe that the player keep them slightly apart at the moment of attack * or something else? A singer who would have vocal cords not closing entirely in the closed phase would sound hoarse ad with weak overtones. Does anyone believe that this doesnÂ´t apply for trumpeters playing with lips always more or less open?