Belen wants to help us to learn the circulatory system, so she sent me this video from youtube. Maybe, you will improve your understanding of it with a little bit of music.
As this post is a little different from the others, here you have two interesting posts, at least for me, related with music. I discovered them in the blog of music of Ciudad Real CPR
Eric Whitacre's Virtual Choir - 'Lux Aurumque'
World Science Festival 2009: Bobby McFerrin Demonstrates the Power of the Pentatonic Scale