Wikipedia
The sipsi is a Turkish woodwind instrument. It is a clarinet-like, single-reed instrument used mainly in folk music. The word "sipsi" is possibly onomatopoeic. The Redhouse Turkish-English dictionary defines "sipsi" as "1. prov. whistle; boatswain's pipe. 2. reed (of a clarinet)." The Turkish Language Society lists "sipsi" as "1. Ağaç dallarından yapılan düdük. [a whistle/flute made from the branch of a tree.] 2. Gemici düdüğü. [Sailor's whistle/pipe.] 3. Zurnanın dudaklara gelen kamış bölümü. [The reed section that fits into the opening (lips) of a zurna.]" No link is made in either dictionary to any other Turkish word. The sipsi, however, is an instrument native to the Aegean region of Turkey, which has a millennia-old history of sea-faring, hence the reasonable association with the bosun's pipe.[5]
The sipsi can be made of bone, wood, or reed, though the reed variant is most common. Its size varies from region to region, but it generally contains five finger holes in the front, and one finger hole in the back.
The sipsi is one of many reed instruments in Turkey used to play lead melodies in instrumental folk music. It is generally played in the Western part in the Aegean Region of Turkey. Most folk tunes played in this area with the sipsi are in 9/8 time.