D Minor scale.stainless steel. 9 note .comes with a high quality hard case(the price of the hard case if you want to buy it separately it’s £150) and a special oil . Will not get out of tune or rusty in humid weather .Tuned perfectly .perfect for meditation, relaxation, or captivating musical performances. When played, it fills the air with a melodic beauty that must be heard to be truly appreciated. Available in 2 colors.black and golden .