Well, TV show themes don't always have literal meaning in the show's context. I doubt that "Who Are You?" or "Baba O'Riley" was meant to be a song about forensic investigation.
Granted, but you'll forgive my wanting a bit
more coherence for Trek
than yet another bleedin' cop show I care nothing about. (And besides, "Who are you?" definitely fits a cop show thematically, and the "Baba O'Riley" lyrics featured in the CSI:NY
intro make the song sound like a warrior's mission statement, whereas the whole point of being a space explorer is to blaze a trail, not follow someone close to you.)