My Yamaha 9000 Pro has Littlite sockets and I have put gooseneck LED Littlites in them (the LED bulbs are expected to last 50,000+ hours). I use the 9000 Pro as a second tier keyboard with a graded hammer action 88-note controller on the first tier. The lights give the entire setup a beautiful light blue glow, plus the display panel of the 9000 Pro is light blue and I've setup a light blue background on my Music Pad Pro. The lighting effect is easy on the eyes and provides total illumination without any other lighting. No other keyboard has the Littlite sockets to my knowledge and it's a terrific feature.