 The program allowed playback of the produced music through various early sound cards, and could print the musical score on a graphics printer.Many software products for modern digital audio workstation and scorewriters for general personal computers support generation of sheet music from MIDI files, by a performer playing the notes on a MIDI-equipped keyboard or other MIDI controller or by manual entry using a mouse or other computer device.By 1999, a system and method for coordinating music display among players in an orchestra was patented by Harry Connick Jnr.