Yes, the MK4 is discontinued. Yamaha will only produce the E3 series, from the GB1 5'0" to the new X series of grand pianos. I can confirm this. I think music in itself is healing. It's an explosive expression of humanity. It's something we are all touched by. No matter what culture we're from, everyone loves music. Billy Joel
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Disklavier MK4
2012-12-28 by Greg Poltrock