You said the wedding was 'diffrent' right? Here are two songs that come to mind that I have used in the past for 'different' weddings....
- Longfellow Serenade
- Forrest Gump Theme
- Cant you feel the love tonight (E John)
- What a wonderful world (Candle lighting)
- Boy in the bubble (Paul Simon)
- Whiter Shade of Pale (used for bride proc)
Not traditional in any sense... I will be interested to learn what you selected!!! Good luck.