Symphonizer - Simply smile to your iPad to turn to the next music notes page.

[mark2b]

You no longer need a special person to help you turn to the next page, nor spend on expensive hardware. Musicians all over the world find it challenging using their hands to turn pages while practicing or playing their music. This app introduces a new simple method (a simple smile) to replace the challenging touch based swipes or taps. A smile is always there to help you turn page while still playing.

https://itunes.apple.com/app/symphonizer/id828535391?ls=1&mt=8

[liszt1022]

Lang Lang is f****d.

[j_menz]

A smile is always there to help you turn page while still playing.

Or sometimes not. 

Thank God it's not a frown, grimace or shouted obscenity, though, or my music would resemble this: