Random Thoughts and Contextual Research

I've been thinking about the breathing sounds of my friends and family that I've been recording lately.  It has been quite funny recording them, but a thought had occurred to me when I first started recording these sounds: What if someone was to die! It would be quite sad having someone's actual breathing sound, even though not really any different than having a photo or video of them talking, but to me it seems quite different.  Anyway I decided  not to think too much about the potential doom and gloom aspect of my project. Instead I thought I would do some contextual research on other artist's that have used breathing sounds.  While I haven't  found any yet using the sounds of breathing, I have found an artist that used his own breathe to blow up balloons. Here's a link to Piero Manzoni's sculpture titled: Artist's Breathe: http://www.tate.org.uk/servlet/ViewWork?workid=26872 
While the balloon deflating, probably happened when he was alive, I found this quite sad since he is no longer alive now, but it is also so effective.