If you have not seen the video of Henry, an elderly Alzheimer’s patient in an American nursing home, suddenly become revived by hearing the music of his youth through an iPod, then stop whatever you’re doing and watch it. A week later, it still makes me tear up.

The clip is part of a documentary called Alive Inside, which follows social worker Dan Cohen as he creates personalized iPod playlists for people in elder care facilities, hoping to reconnect them with the music they love. Cohen tells NPR’s Melissa Block that the video of Henry is a great example of the link between music and memory.

This is beautiful, so so beautiful.