I have a custom ringtone, "Good Morning, Beautiful" by Steve Holy. My wife and I have been awakened by this ringtone for over 5 years now. With a nice fade-in, and the beginning lyrics being, "Good morning, beautiful, how was your night? Mine was wonderful with you by my side. When I open my eyes and see you by my side, it's a good morning, beautiful day."
Doesn't get any better than that, and always puts my wife in the mood for a bit of smooching first thing, which is also nice.