Yep, I want one of these!
“A mobile MIDI + audio interface that lets you play your iPhone/iPad using any keyboard. More about plugKEY at http://www.korg.com/plugkey/
The plugKEY is a portable MIDI + audio interface that is the answer for those who want to use a keyboard of their own choice to play iOS musical instrument apps or produce music. Simply use the plugKEY to connect a MIDI keyboard to your iPhone/iPad, and start playing. Now you can enjoy using your own keyboard to easily play a stupendous array of musical instrument apps that deliver serious sounds and convenient functions. You can use your iPhone/iPad while charging it. Audio interface functionality with stereo output is also provided, so the plugKEY is an ideal choice for those who want to use musical instruments apps in the studio or on stage.”
Published by Korg.