By Ariana Bacle
Updated June 23, 2015 at 04:28 PM EDT

Before he was a movie star, Mark Wahlberg was one of the original New Kids on the Block alongside brother Donnie (who’s still a member) — and he briefly returned to the boy band Monday night with a surprise appearance at the group’s Madison Square Garden show. It was his first time on stage with the band in 20 years.

New Kids on the Block are currently on the Main Event Tour, which has so far featured other special guests like 50 Cent and Biz Markie (TLC and Nelly are also on the line-up for the next two shows).

50 Cent was the one who brought Mark onstage Monday, and the Ted 2 star went on to embrace multiple members of the band and wave to the crowd before leaving the stage. See video of his cameo below.

Video Credit: NKOTB/ Faculty