5 years ago today on March 9, 2017, Mnet revealed 'Produce 101' season 2's main theme song, "Pick Me" Ver. 2, for the first time through a performance clip featuring all 101 trainees!

To commemorate the iconic K-Pop track turning 5-years old today, netizens have prepared a little trip down memory lane, which you can take below!

"Pick Me" Ver. 2

Produced by: Ryan S. Jhun, Emile Ghantous, Keith Hetrick, APPU KRISHNAN, Cheryline Lim, Jason Jones, Zaydro, RHeaT.

Sung by: All 101 Trainees of 'Produce 101' season 2

The first performance clip, revealed by Mnet approximately a month before the premiere of 'Produce 101' season 2 on March 9, 2017:

"Pick Me" performed by trainees on the final, live broadcast of 'Produce 101' season 2:

"Pick Me" performed by Level 'A' trainees on Mnet's 'M! Countdown' on April 27, 2017:

"Pick Me" performed by Wanna One at the '2017 KBS Gayo Festival':

"Pick Me" performed by Wanna One at the '2017 SBS Entertainment Awards' feat. Yoo Jae Suk:

"Pick Me" piano ver.:

Many netizens left nostalgic comments like,

"It's already been 5 years since someone who knew nothing about K-Pop idols like me fell completely in love with an idol on this show, and I haven't stopped being a fan since..."

"This song makes my heart flutter still..."

"This was one of the highlights of my twenties..."

"Dae Hwi was such a baby TT."

"All of you, I hope you're all doing well and are staying healthy~"

"I can't believe it's already been 5 years since I met Minhyun TT."

"OMG my youth... I lived with so much passion back then, doing all I could to vote for you boys..."

"I remember how happy I was every Thursdays because it was 'Produce' day."

"The piano version still makes me cry TT."

And more. Are you feeling nostalgic too?