I love the piano and hammond fills all the way through the verse, it's got a cool jazzy sort of sound reminds me a bit of Steely Dan. The backing vocals are quite CSNY-like - a fine piece of work!
The jazzy feel, I suppose, is from the two primary chords in the verse: Cmaj7 and Fmaj7(b5). The keyboards are by a friend of mine, Seth, who did a nice job. (He's also the Seth named in the lyrics who "once you finish one [song], Seth makes you write another; lately I don't ever have any fun." We were in a band together. He was more ambitious than me.) Thanks for the compliments, even though the two bands you've named are two I don't even like. It's an odd coincidence that usually when someone says I sound like [band], it's a band I hate!