As most of us are experiencing, most education boards have or are clawing back on some of the resources personnel available to educators. For many educators, teaching music is not a natural skill.
JamStudio is a free (to play and save), but also has a paid subscription that will allow you to save and download your projects.
“Learning Music Can Be Fun...Writing and exploring music is fun when you have the right tool- you found it!... Amateurs and pros alike need a musical sandbox to try out ideas unlimited variations and “what if” versions can be explored instantly in a wide range of styles” http://www.jamstudio.com/Studio/index.htm
Here is a short composition by Clarence on YouTube!
Have fun jamming with JamStudio!