It's hard to describe how it feels when you listen to someone else's arrangement of your song for the first time. If the arrangement is good, it somehow makes the song sound more like itself, as if it has come into its own. At the same time, the unfamiliarity of it is insanely jarring. No matter how spot on everything is, your brain keeps screaming that the new stuff is not supposed to be there.
Here's a summary of what went through my head when, after much suspense, I finally heard "Everybody Knows About Me" with Producer Drew's new tracks:
Hmm, piano intro is still by itself. Drew said he'd laid down a Hammond B-3 organ and bass track ... guess they don't come in 'til later. Whoa, there's the organ! And bass! Freaky. The bass is doing something completely different than what was in my head. But it's giving the song so much power. Ooooh, the chorus has started, and it finally has the depth and intensity I'd hoped for. This is so weird. I think I like this. Do I like this? The bridge has enormous impact with the new instrumentation. I can't get over the fact that there is an organ in this song. There is no organ in this song, and yet I am hearing an organ. Wow, that's cool! But it's so weird! But it's cool!
There is only one remedy for new-arrangement dissonance, and that is to listen to the song over and over and over again until you get used to it. Only then can you sort out how you really feel about the way it sounds.
In this case, it sounds great. Go Drew!