Music Shake lets you create….musical tracks quite easily, which you can then embed or post a link to it. You can do those things for free. However, you have to pay if you want to download your music for use in a video or other presentation. In fact, they just created an education arm where schools could purchase licenses for all their students to do just that.
I think it’s fine to just have students, especially English Language Learners, use it to quickly create music and then describe it and have students comment their classmate’s creations.
I’m adding it to The Best Online Sites For Creating Music.
You can learn about Music Shake at TechCrunch.