We heard about the Airturn when it first released a few years ago, and the company is here at Macworld/iWorld 2013 this week in San Francisco, showing off both the older two-pedal unit, and the brand new four-pedal unit you can see above. That piece in the middle of each unit is a Bluetooth device, and it hooks up to about 40 different music apps and score readers on iOS, so that musicians can turn pages and scroll down virtual music sheets without using their hands. There's even optional bite- and tongue-switch accessories
The standard Airturn unit, called the BT-105, is US$120, and you can set up the pedals in quite a few apps to not only turn the page, but also toggle audio or navigate lists as you go. The four-pedal version arrived last year, and it's $159 (though both models have a discount on at the expo this weekend).
Airturn shared a booth with a company called The Gig Easy, that makes music stands for the iPad. They seemed very sturdy indeed, and I'm not sure what else you'd want from a way to hold your iPad up while you play. Seems like there are plenty of excellent options for musicians looking to use iOS to read and play their tunes.