I found Hands Symphony on one of my favorite resources, KB Connected.  I think that it is a great site for composing a tune to email to someone you care about while at the same time spreading life-saving information about CPR.  Even if you aren’t planning to e-mail your composition, your students will have fun with this creative way to make music.  I thought it was appropriate to post a site sponsored by the American Heart Association on Valentine’s Day:)