LOL! You brought back a memory -
DH and I were at WDW several years ago. We were waiting for a bus, all by our lonesomes with no other people around, and all was quiet and bliss including the piped in music that I was enjoying. I remember sitting there being so grateful for the trip, the good weather, the man I was leaning against and holding his hand; just being overjoyed and truly thankful for that moment we were sharing - just the two of us.
Then over the speakers came an instrumental version of, "When You Wish Upon a Star".
OMG! That was it. I so. totally. lost. it.
I had tears streaming down my face, I was snuffling, crying, digging for a kleenex and poor DH, who'd been innocently minding his own business, looking around, watching the trees, the cars, the birds, whatever, looked around at me kinda startled and asked what was wrong.
Well, being autistic, I couldn't speak. I was just way too overwhelmed. The only thing I could do was kinda wave my hand ("it's nothing, honey") and keep digging for a kleenex (notice there's never one when you really need it!) I kept pointing at the roof over our heads hoping he'd get the hint that it was the speaker/music I was pointing at.
Unfortunately (and God bless him), he actually stood up and started looking all over for whatever it was up there that was bothering me - a bee's nest, a bug, a gecko, a bird, chipped paint. There was SOMETHING there responsible for making me suddenly burst into tears for no reason and he was going to fix it if it was the last thing he did.
Which made my cry more.
After I'd gotten calmed down and was able to speak again, I told him it was the music and what it meant to me. He kind of shrugged it off, called me a goof, and we went about our day.
I took a nap later that afternoon and when I woke up I found an EPT pregnancy test sitting on the sink in the room. He'd gone out and picked up one while I was sleeping thinking that I must have been over-emotional because I was pregnant.

So the people here aren't the ONLY ones who think our joy at hearing these songs indicates a hormonal imbalance.
Needless to say, I wasn't pregnant. Just very, very happy. It took just the right song at just the right moment to completely overwhelm me, just as the MSEP music overwhelmed you. Hopefully your new DH will get used to it like mine did.
Thanks for the memories. If I find that song on the internet, I'll be sure to post it for you guys so you can understand just how beautiful that particular rendition of "When You Wish Upon a Star" is.
Found it!
http://www.youtube.com/watch?v=KiQ8AfDJYrI