how tired are you of talking about "mmmbop" or is it still a source of pleasure?nown for what you're doing because you care about what you're doing. but what we're doing right now doesn't exist without what we did, right? >> when you can play a song, you know, and it still feels like it resonates, that's kind of an accomplishment. >> when you play it live now, is that hard on your voice because your voice was pretty high back then. >> we changed the key. >> right. >> the brothers started singing back in 1992 at the ages of 11, 9, and 6. their love of music came out of listening to legends of the past. >> it was chuck berry, aretha franklin, little richard, bobby day. we auditioned for a local arts festival in tulsa in our hometown. we got the booking to play, you know, a 15-minute set. basically, every time we played a show from 1992 on somehow or another we would get another gig. but in our case we were so young you couldn't play bars, so we would just >> reporter: soon they'd find themselves playing at south by southwest, a music and film festival in austin, tex

. ♪ mmmbop >>> welcome back to "gma." that's the '90s hit "mmmbop" from the hanson brothers.bopped along with that. and some are bopping now at the desk. >> hard not to, michael. >> it is. they are here for the big finale of our ultimate mix tape concert. there's a lot of excitement around here this morning. >> that song is going to be in our heads all morning. >> those people in front, five from ohio, they've been here since 4:30 this morning. they are going to get in and they're going to see hanson. hear that, simone. they're going to get in to see hanson. >> you guys can thank robin for that, okay? >> absolutely. >>> also right now president trump and republican leaders celebrating their health care win after the bill narrowly passed the house. it's headed to the senate right now and it faces a tough test there. republican senators say they'll have to rewrite the bill and any changes made will have to get an okay from the house. >>> the east coast is on alert for severe weather this morning after dangerous storms moved in overnight damaging homes and stores in georgia and