Two juggernauts collide as AC/DC's "Night Prowler" takes on Pink Floyd's ominous-sounding "Careful With That Axe, Eugene" in the next round of our Rock's Scariest Song battle.

In honor of Halloween, we’ve chosen 16 of rock’s scariest songs. The field will be sliced, diced and chopped in half every week based on your votes, until only the most terrifying song in rock history remains alive.

AC/DC has already breezed past Metallica's "One," earning a whopping 67 percent of the vote to advance this far. The story was no different when "Night Prowler" faced Warren Zevon in the opening round, as AC/DC soared to 73 percent.

"Careful With That Axe, Eugene," which was originally released as a B-side on Pink Floyd's single "Point Me to the Sky," topped Blue Oyster Cult's "(Don't Fear) The Reaper" in a closer 55 to 45 percent race. But that was after besting Donovan's "Season of the Witch" with more than 70 percent of the votes in round one.

We've included both songs below so you can make an informed choice, and you can vote once per hour in each of this round's Rock’s Scariest Song battles until polls close on Oct. 26 at 11:59PM ET. Your choice for Rock’s Scariest Song of all time will be revealed on Nov. 1, 2015.

Listen to Pink Floyd's 'Careful with That Axe, Eugene'

Listen to AC/DC's 'Night Prowler'

Pink Floyd Albums Ranked Worst to Best