| Use the program. |
| 1. Upload files of musical song *.mid. |
| 1.1 Upload files of musical song *.mid.(for HTML5) |
| 2. Download file musical song *.mid. |
| 3 .Play musical note sound. |
| 7. Adjust the volume. |
| 8. Buttons for stop, play and record. |
| 9. Buttons for learn musical song. |
| 10. The position of the time of the song. Which can move the time. |
| 11. Show or Hide musical notes. |
