'Rain Relaxation Sound' on YouTube

Are you looking for something different from music to have as a relaxing sound in the background? I found a clip that lasts for almost two hours. It is simply the sound of rain falling. It is accompanied by a photograph of rain falling. It may be more appropriate to pipe in to a quiet corner, as opposed to the entire classroom. I haven't noticed any thunder, so young ones won't have to be startled by that.