Avenged Sevenfold slyly slipped a teaser of their new song from the upcoming Call Of Duty: Black Ops 4 into a tour recap, and everyone missed it. Below, catch what appears to be a quick preview of the band's video game soundtrack jam.

Read more: Twitter wants to tell you who to unfollow

The bummer development that was A7X's cancelled summer tour notwithstanding, the Aug. 15 video update about the SoCal metalheads' recent festival run appears to contain the Call Of Duty contribution in the last 15 seconds of the vid.

The majority of the recap covers the band's European festival sets from earlier this year, as noted by Loudwire. But stay tuned for the clip's conclusion, where what sounds like a small sample of the Sevenfold's Call Of Duty tune begins to play.

At about the four-minute mark of the video, a seemingly fresh guitar riff suddenly starts its picking. And it's presented alongside the unmistakable Call Of Duty: Black Ops 4 logo. (Again, apparently none of us noticed this two weeks ago!)

Is Avenged Sevenfold just messing with us? It seems like the group are in good spirits following singer M. Shadows' vocal cord issues. Accompanying the low-key song sneak in the clip, the band members are shown having a ball on tour.

"We're just about in a state of pure bliss," guitarist Synyster Gates is quoted as saying. "We’re damn close to getting to exactly where we want to be." Call Of Duty: Black Ops 4 is out Oct. 12 for Windows, PS4 and Xbox One.

Watch more: Frank Zummo on drums, Josh Dun, Sum 41