What happens (at the end)

What happens when the song I sing
Doesn't seem to mean a thing
And everything I have to bring is borrowed and rehearsed

What happens when the music ends
And I'm too tired to pretend
That who I am and who I've been could ever get along

Now's the time for letting go

I surrender all, can you hear my call?
When I'm at the end of myself
Is this where you begin when I'm caving in
When I'm at the end of myself

What happens when the motion stops
staring at a broken clock
When what I am and what I'm not are perfectly reversed