One method and the one I use is to buy the Apple Lightning to USB camera adapter that I plug into an external hub, along with a MIDI keyboard plugged into that. The reason for the external hub is strictly power in this case. The problem with this method and one that many attest to is that when the adapter is plugged in, the IPad battery is not charging, and even with the keyboard off, and hub powered down I find the IPad will not go into normal sleep mode, and will discharge. So, when done playing I try to remember to get it on the charger. Software wise, I use Audiobus as the MIDI routing tool in the IPad. It appears more complicated than it actually is, but the whole power thing is clunky. The other complaint is that the screen will turn off as a power saving measure when you play. I think there is a utility to fix that but so far I haven’t bothered.
John
From: newmellotrongroup@yahoogroups.com [mailto:newmellotrongroup@yahoogroups.com]
Sent: Wednesday, September 02, 2015 11:20 PM
To: newmellotrongroup@yahoogroups.com
Subject: Re: [newmellotrongroup] King Crimson
You can hook up a compatible keyboard controller by USB.
Bill Rudloff
Sent from my iPhone4
On Sep 2, 2015, at 9:14 PM, jfranmac@gmail.com [newmellotrongroup] <newmellotrongroup@yahoogroups.com> wrote:
I wonder how they were utilizing the ipad. Controlling it externally?how do you do that?