Had one done yesterday. It was the 2nd one I've ever had in my life. I was in the 'tube' for an hour, just for some tests on my thumb.
But here are a few of the sounds you hear (even with earplugs in) that last for at least 5 minutes each 'sound'.
I don't mind being in the machine, as I'm not claustrophobic, but those repetitive sounds? It has a good beat, but you can't dance to it.
http://www.lodestone.co.uk/faqscansounds.htm










