'When I'm all alone or in a crowd'

In a quiet place or where music's loud
If I'm on the road, or in the other room
That's how you know, I'm thinkin' of you

When the flowers bloom, when the leaves turn brown
when the sun is hot, when the snow falls down, down
when the clouds are gray, and the sky's are blue
that's how you know, I'm thinkin' of you

You're always the first and the last thing on this heart of mine
No matter where I go or what I do, I'm thinkin' of you.

http://youtu.be/INkvQpjfrHY
(dierks bentley, 'thinking of you')