Interesting little product. I have a Yamaha Disklavier Mark IV. I have wanted to stream MIDI files to my piano from my cell phone and iPads. It works exactly as suggested. Plug it in to the MIDI in and out ports, and you have bluetooth connectivity. It's a pretty cool little add-on! While I didn't think SamAsh was going to come through with the delivery prior to Christmas, (item was ordered on December 18th, no other dealers had them in stock until mid January), the item was delivered on time and as promised from their Florida location to Chicago. Thank you SamAsh! I'll be back.