Is Tim singing about Brody? I dunno. Here's a story, though. It, however, is not about Tim or Brody. I understand you are dissapointed.
There once was a little girl who sang all the time. She would sing and sing and sing and sing and sing. People would gather and go, "Awe... Can I have some chorizo?". Yesss... And then one day, her evil, EVIL sister had to ruin her dreams. "You know you can't sing, right?" The little girl was shocked! Was her voice that horrible? Horrible enough to make want to die a horrible, pain filled death? Yes. So she stopped talking and she died. The end.
I'm gonna leave you with a little quote.
"And I'm caught in the middle: torn between my loyalty to the boss and my desire to piss with the lights on." - Randal, CLERKS.