It provides increased legibility compared to music notated by hand. And notated scores can be played using an attached MIDI device. MIDI keyboards can provide the same functions as a piano, plus serve as input or output device for appropriate software. While the instructional technologies described above provide some advantages over those used in the traditional classroom, there are some significant limitations as well, centering on the fact that in most cases these technologies are not integrated. This restricts an instructor's ability to adapt to the inevitably dynamic circumstances encountered in any teaching situation.
Notation software is generally very poor at presenting text.
Its input mechanisms are optimized for entering music sequentially, whereas in teaching situations an instructor needs to be able to enter music in arbitrary order. Also, in a music theory context, in particular, there are special notational needs, such as figured bass and roman numeral attachments. In addition, an instructor often needs to annotate a score, in order to draw students' attention to particular features. While there are some solutions available for some of these cases, they are kludges at best. The addition of scanned scores enhances the benefits of this resource.