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Seulong tweeted on the 11th, "It's already 2am's 6th anniversary. Time sure flies. I love you�IAM who have been with us from the beginning until now."

Jo Kwon shared on his Instagram, "#2am Then and now. Six years and I AM. I am just thankful and I still love you since then and now.!"

Jinwoon tweeted, "Wa..Already..It's our 6th anniversary..keke Time sure flies.. It seems like just yesterday when I first sang 'This Song' to the extent that I remember my nervousness and all of the songs that were ahead of us... Time sure flies..^^ Thank you so much.. I will work hard to sing and strive on to repay all of the love that you've given us!!"

Changmin also posted, "When it becomes the day of our 6th anniversary since our debut, 'I will sing until my throat bursts'. Something I've always been saying for the past six years since our debut... It still hasn't burst yet so I will continue to sing? ^^V."

Congrats, 2AM and their fans!