I would like to be able to have the OnSong iPad app automatically change the performance on my Yamaha CP4 when I change the song in OnSong. I've been able to get the CP4 to register some events in the OnSong midi editor, like playing a note. Does anyone have any experience with this to point me in the right direction? I posted a ticket with the OnSong people a few days ago but haven't heard anything from them yet. Or maybe there’s another app that might do this, maybe SongBook? Thanks.