Day 18: 30-Day Song Challenge

Day 18: A song with your favorite opening

This is a vague prompt (much like all of it so far). Is it asking for my favorite opening line or opening riff/chord?

If it's the former, I would say it's "Hello darkness my old friend." (Sound of Silence)

If it's the latter, then it's definitely this bad-ass opening riff:

Barracuda by Heart

This is the song that plays in my head when I'm about to enter a room full of people that I need to "impress" or to feel confident and in-charge. And I have Lucy Liu to thank for that.