This flute is in the key of D. It is tuned to the traditional Irish scale, the F# is flat, the A is sharp, the C# is flat, and the bottom D is also quite flat. We designate this tuning as "Traditional" tuning. If you're looking for a flute with standard tuning, please look for flutes labeled "Standard" tuning. This beautiful satinwood flute assembles in four parts. The upper two sections have a brass slide for additional tuning. The center section slides into the top and bottom sections and has taped & thread wrapped ends for a secure fit. Assembled flute is 26 inches closed; slide opens the flute to a 28.25 inch length. Case included.