Not sure about the original key, but I play it in E.
How many fantasies
Were interrupted by
A hundred galaxies
That were drifting by
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
How many apologies
Were interrupted by
Learning how to read
Looking at the sky
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
Your baby s sleeping, sleeping
Your baby s sleeping, sleeping
Your baby s sleeping, sleeping
Your baby s sleeping, sleeping
Sleeping, sleeping
Sleeping, sleeping...
Your baby s sleeping, sleeping
Your baby s sleeping, sleeping
Your baby s sleeping, sleeping
Sleeping, sleeping
Sleeping, sleeping...
How many fantasies
Were interrupted by
A thousand galaxies
Drifting slowing by
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe
The Mona Lisa s got you in awe