Staffpad

StaffPad lets you write music notation in your own handwriting; record and import audio; edit with the convenience of touch, and hear your composition played back with breathtakingly realistic sounds. A second free app is made for musicians. It connects to StaffPad, and displays the individual parts of a StaffPad Score, in realtime, across multiple devices. Any changes made to the score in StaffPad update instantly on every connected Reader. Annotations and playback work in perfect sync - all you need is a simple Wi-Fi connection.