This kind of product could be useful for a musician who records a song, then uploads it to get the sheet music -- that way, they can skip the step of having to manually transcribe their work.

Deal pricing and availability subject to change after time of publication. TL;DR: Take half off a 1-year subscription to Tomplay™ Interactive Sheet Music, making it just $49.99 as of June 9.

There are a number of sheet music background templates in the note taking section. You can write your own sheet music or import in PDF files from your own personal collections.