public void Write(int iter, byte[] fftData)
        {
            // Black background lights
            for (int x = 0; x < 91; x++)
            {
                for (int y = 0; y < 7; y++)
                {
                    this.SetLed((x + iter) % 92, y, 0x00, 0x00, 0x00);
                }
            }

            // FFT Data to key lights (rainbow)
            for (int i = 0; i < 91; i++)
            {
                for (int k = 0; k < 7; k++)
                {
                    if (fftData[(int)(i * 2.1 + 1)] > (255 / (15 + (i * 0.8))) * (7 - k))
                    {
                        if (i <= 30)
                        {
                            this.red = (byte)(7.0f * (Math.Sin((i / 60.0f) * 3.14f + 1.57f)));
                            this.grn = (byte)(7.0f * (Math.Sin((i / 60.0f) * 3.14f)));
                            this.blu = 0x00;
                        }
                        if (i > 30 && i <= 60)
                        {
                            this.red = 0x00;
                            this.grn = (byte)(7.0f * (Math.Sin(((i - 30.0f) / 60.0f) * 3.14f + 1.57f)));
                            this.blu = (byte)(7.0f * (Math.Sin(((i - 30.0f) / 60.0f) * 3.14f)));
                        }
                        if (i > 60)
                        {
                            this.red = (byte)(7.0f * (Math.Sin(((i - 60.0f) / 62.0f) * 3.14f)));
                            this.grn = 0x00;
                            this.blu = (byte)(7.0f * (Math.Sin(((i - 60.0f) / 62.0f) * 3.14f + 1.57f)));
                        }
                        this.SetLed(i, k, red, grn, blu);
                    }-
                }
            }

            UpdateKeyboard();
        }