Ask a non-musician their favorite song, no problem. But as a musician, at least speaking for myself, wow... 'tain't easy. There are so many... and those favorites change. As ChuckH says, it often depends on what I'm working on currently, which now happens to be:

Love Will Keep Us Together
Can't Take My Eyes Off Of U

A few classics that I enjoy performing:

Dream A Little
What A Wonderful World
I've Got U Under My Skin
Night & Day

The variety of responses are proving to be interesting... OK Scott, your turn.

Glenn