It's now down to 3 finalists - Lee, Crystal and Casey.  Of the 3, my favorite to win would be Lee - he's just so adorable and of course, with such nice singing voice... and the eyes!
Here' a duet of Lee and Crystal:
Apparently, the same song was sung by Kris Allen in last year's A.I. (Season 8). 

Here's Kris and his rendition of "Falling Slowly":
...And the rest is history.  Kris Allen went on to win the American Idol, Season 8.
I hope Lee wins this year.
Falling Slowly (Lyrics)

I don't know you
But I want you
All the more for that
Words fall through me
And always fool me
And I can't react
And games that never amount
To more than they're meant
Will play themselves out

Take this sinking boat and point it home
We've still got time
Raise your hopeful voice you have a choice
You'll make it now

Falling slowly, eyes that know me
And I can't go back
Moods that take me and erase me
And I'm painted black
You have suffered enough
And warred with yourself
It's time that you won

Take this sinking boat and point it home
We've still got time
Raise your hopeful voice you had a choice
You've made it now
Falling slowly sing your melody
I'll sing along
 
Some interesting songs I found in the internet.  These are actually covers of songs of Hall and Oates, who were one of the music icons in the 80s.
Below is the song "She's Gone"...