key 4dNord Electro 4D SW61: 61-key (5 octaves, C-C) Velocity sensitive Semi Wehted Waterfall keyboard. Nord Electro 4 SW73: ... Memory Nord Electro 4D SW61. 185 MB memoryForm FSP 4D must be completed by all key individuals of an applicant. 2. A passport number will only be accepted if the person completing the form is not a South African Citizen. 3. Race