Soundtrap is a great resource when creating music or voice recordings. It allows you to use instruments or imported music along with your voice to create multiple projects in any subject area.
We have used Soundtrap a lot in my class. From podcasts, voice-overs, and special effects, to book reports, raps, and PSAś. Soundtrap has been a great tool and allows you to use the vast majority of the site for free!