To start, click the green flag. Then, you toggle the Key, the Length (Leng.) and the Instrument (Inst.) of the note you want to add. The green arrows increase the value of the note's statistics, and the red arrows decrease them. To add a note with the values you have entered, click the "Add Note" button. To remove the last note you entered, click the "Rewind" button. To reset the score entirely, click the "RESET" button. To play the score you have so far, click the "Play" button. You can only click play if you have at least one note in the score, and you can stop the score from playing by clicking the "Stop" button that the "Play" button toggles into when you click it.
I created all the artwork. The idea was my grandpa's, and I carried it out for him. This project was made in loving memory of my grandma, Nancy, who passed away the night before I made this project. I love her, and I'm sure she would love to see something like this created on Scratch.