got older, you know, singing what all kids that were born in 1990 were singing was backstreet boys, nsynclisten to the backstreet boys, you're lying. >> reporter: can you give me a line? >> you're going to make me do it? full nsync. >> reporter: i love would love it. ♪ god must have spent a little more time on you ♪ >> reporter: all right. yeah. >> look at that. >> reporter: that's what i'm talking about. back on the road in west virginia -- >> what if you do, it seems like yesterday, you left -- >> reporter: we sat in on a tour bus songwriting session. >> feels like yesterday, but -- when it comes to the songwriting, i'm super, super perfectionist. the small words, like, should this be a but or an and or an or, like, that stuff is super important. ♪ ♪ beautiful ♪ crazy >> reporter: his songs are personal. his song "beautiful crazy" hit number one across all genres. >> that got me serious brownie points. that was before we were officially dating. >> reporter: that sealed the deal. >> i think so. i hope so. >> reporter: it's an hour from showtime and luke's getting in the zone. >> step one

. >> nsync's lance bass wanted to buy the house and turn it into a brady shrine, but hgtv outbid him.ted to own it. >> nobody could love it like i do. >> when we went upstairs on the show, we would flirt up there. it was our own brady time. >> really, do tell. >> well, i did any ways. >> the hgtv's biggest stars are here. the goal is to match the interior to what we saw an tv. >> how are you going change the house? >> this is a split story home. the brady bunch is two stories we are not going to change the outside, but the inside is going to have stairs. >> how is that possible? they haven't said what they plan to do with the house, but they plan to add 2,000 square feet by summer. >> hgtv filming a very brady renovation today. lance bass will be involved. it's 50 years since "the brady bunch" premiered. we are missing the quite a few members. >> it's old. >> it can be fixed up. >> what would robert and florence think of this today? >> i think they would be very proud of what we are doing here. >> they are all up there together and i think they're smiling down on us. three amazing peo

here's you and the boys.gh nsync there. [ cheers and applause ] i was flipping through it.u know the dudes right there. you got some good -- keep going? yeah! [ cheers and applaus] that's -- this is -- yeah, this is where the book -- [ cheers and applause ] yes! is is where the book gets hot! it just too hot, this book ouch! [ laughter ] look at this book, how hot this book i ♪ talking it up [ cheers and applause ] you can't even dit. you can't -- it must drive you crazy. yeah. actually, that's kind of more robin gibb than anytim he never speaks anyway. no. no, i didn't. ♪ talking it up [ laughter ] on the barry gibb talk show ♪ ♪ talking about issues talking real important issues talking it up ♪ there you go. good. [ cheers and applause ] we should do ts. all right, i have an idea. because honestly i told you, i said, "justin, you can cancel." and you're like, you texted me, "no, way, i'm" -- [ light laughter ] i said -- [ light laughter ] you said, "i'm coming." oh, yeah, yeah, abso. yeah, yeah. [ cheers and applause ] urd you did it. you're a man of ord. you're a man of

were you team nsync? >> they had the dance moves. >> or were you backstreet boys?with my heart with my heart my heart ♪ ♪ i should have known from the

were you team nsync? >> they had the dance moves. >> or we youbackstreet boys?g games with my heart with my heart my heart ♪ ♪ i should have known from the start ♪ ♪ from