Was your VCR on record? Because Hanson performed on TV last night!

Isaac, Taylor and Zac appeared on Greatest Hits, ABC's new variety series that brings together acts from the '80s, '90s and '00s with today's hitmakers for performances of songs that defined eras along with unexpected duets. A late-'90s-themed episode on Thursday brought together Meghan Trainor and the Backstreet BoysTori Kelly and Jewel, plus your favorite brother trio performing their breakout chart-topper, "MMMBop," from 1997 in a lovely acoustic rendition.

We're happy to report their harmonies are still on point. Not that anyone doubted they would be—this ain't no Jonas Brothers.

Greatest Hits brought out the '90s night after premiering with an '80s-themed episode that had high points (Jason Derulo's Michael Jackson tribute) and some questionable moments (Pitbull and REO Speedwagon?), but all in all it's making for great, and perhaps most importantly hit television.

Keep your #FlashbackFriday vibes going with a classic Fuse interview from 2013 where the guys reflect on how "they were supposed to have their own country."