Sebelius - don't forget it could just be listener-fatigue. Sometimes the best people are the ones that get talked over just because everyone knows they're good & assumes they must be confident enough not to mind (that effect is multiplied if they're your friends).
Its very difficult to listen intently all evening, so sometimes a little inattention breaks out that is no reflection on you or the songs.
On a similar tack - has anyone ever suffered (like me) the supreme embarassment of apologising after a song for having got some crucial wording wrong, then realising everyone is completely puzzled by your explanation because they weren't paying attention anyway & have no idea whatsoever what the song was about (heart-breaking when you've emoted your best).