A few days ago, Florida Georgia Line posted a video on Instagram of one of their concertgoers singing “H.O.L.Y.” at the top of his lungs with the caption: “You Can’t Mistake Passion. We love this. 👊🏻”

After more that 338,000 views, the “Mountain Dew Guy”—as he’s affectionately been dubbed thanks to his shirt—has become a bit of an Internet celebrity.

Watch the video of him belting out “H.O.L.Y” below.

You Can't Mistake Passion. We love this. 👊🏻

A video posted by Florida Georgia Line (@flagaline) on Jan 27, 2017 at 11:03pm PST

Mountain Dew Guy, aka tm42dreameater on Instagram, has responded with a video of his own in which he states: “I just want to say, now that I’ve woken up the morning after the concert and seen this video that you guys took of me, thank you Florida Georgia Line for putting on such a great show. I had a wonderful time.”

@flagaline Thank you guys so much for the wonderful concert! I'm glad I caught your attention! Keep up the good work! #digyourroots #flagaline #holy

A video posted by Ryan Charles (@tm42dreameater) on Jan 28, 2017 at 8:13am PST

Notice that Mountain Dew Guy is still donning what I believe is the same shirt from the previous night, unless he has a drawer full of those things. Must have been a long night.

FGL responded on Instagram by re-posting the video with the caption: “Well, due to the overwhelming response from the “Mountain Dew” guy singing HOLY this weekend, we were just sent this video. We love you @tm42dreameater and glad we could make a memory together. #FanGoals #WokeUpLikeThis #TeddyBearGameStrong”

Never underestimate the power of music . . . or Mountain Dew Guy’s passion for FGL.