song i cant figure out

[mondo1090]

i was in a hookah bar earlier today and heard a song so i remember the first line i believe but am having no luck so can someone help me out it went somthing like:

i got your letter last night it was light as a feather

or

i got your letter this moring it was light as a feather

or

i got your letter the words where light as a feather

those where like the first words of the song, i dont really remember much eles, they played like 3 songs by them all very mellow all things you could fall asleep to, seemed to be maybe a guy girl band as most songs had both a guy and gorl singing