It flattens and takes the shape of a double reed. Most acrylic calls have the capability of getting much louder than double reed calls. It is difficult to play due in part to the double reed configuration. This may be especially true of double reed instruments. A Turkish influence comes from the mey, which has a large double reed. The oboe ( ) is a type of double reed woodwind instrument. Adjustments to reeds are, consequently, very frequent among double reed musicians. A double reed is mounted inside a chamber. Exposed double-reed instruments are played by having the double reed directly between the player's lips. Environmental factors such as humidity and temperature also affect the performance of a double reed. Also, the tubax is similar to a double reed instrument family called a sarrusophone. A double reed is mounted inside a long windcap. The second portion is made from two jointed double reed pipes having holes. Commissioned by The Double Reed Ensemble of Iowa (a.k.a. Wizards). Marsyas was an expert player on the double-piped double reed instrument known as the aulos.