I've had two MRIs. But mine were brain and backbone. I had the dye injected for one of them but it wasn't too bad, I just sort of zoned out. I kept my eyes closed throughout and I had it done in Marseille so they just gave me ear protectors, I think. The listen to music option wasn't on offer.
The only thing that went wrong is that I wear my mum and dad's old engagement ring on my right middle finger which is too tight to get off and it blasted a diamond out of the setting.
There’s a bit of a funny part when they ask you to hold your breath or otherwise do strange breathing but it will pass.
On a scale of medical procedures that I've had done, it ranks much lower than going to the dentist for anything too complicated.
That said, I'm not claustrophobic in any way. No matter what happens OP, the radiographers will have seen it before.
Good luck x
As a side note, I've had CT scans as well and the dye injection sudden hot feeling doesn't happen with MRIs. (Or at least it didn't to me.) The radiographer who did one of my CT's was an absolute flamer of a French gay man and when he asked me, "Are you allergic to shellfish" I was quick enough to say, "Why? Are we going out to dinner tonight?"
He'd already set the tone by rearranging my lovely hospital gown and saying, "We're not at the Folies Bergères ma chérie."