What song would you walk down the aisle to?

Scratch the wedding march for this question, if you were getting married what would be your ideal song to have you (and possibly your bridesmaids/groomsmen) walk down the aisle to? I think "Rivers and Roads" by The Head and the Heart is really gorgeous and would make for a lovely entry.

If you're already married, did you walk down the aisle to a song besides the wedding march and, if so, what was it?

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