|An electronic Bluetooth foot pad|
turning Isle of Eigg (pdf) sheet music
What the artist really wants is for the page to turn with as little distraction as possible and it appears that some instruments are better suited than others. The good news for the accordionist is that your feet aren't considered part of the instrument and are free to turn the sheet music page at just the right moment. This is particularly helpful since the instrument is between the artist and the music stand and the instrument's keyboards are not easily seen at a glance.