Press the green flag. Use the instrument slider to change the instrument. If you don't like it try it without the melody part at this link: https://scratch.mit.edu/projects/710684498 .
The song is pomp and circumstance as written by Edward Elgar (1857-1933) and arranged by John Higgins. This is my first time programming music using Scratch and so I was unable to use staccatos and slurs. I hope you enjoy it.