Backstreet Boys live @538 | backstage special

[@endlessjoy218]

That was the most beautiful Happy Birthday song that I have heard. Amazing.

[@Goldengurl85]

Brian is adorable! Great job guys :)

[@MrsAduu]

Perfectionnnnnn ♥♥♥♥

[@vanss1935]

Love them!

[@NhuPham-or6sl]

So cute

[@marthaayala0206]

Nick and Brian 😂❤

[@SpursLover53]

Dang, a bday song and everything! So goooood. :D

[@ShelleyRocks]

Great job guys...love you!

[@MaDaB1]

brian can still falsetto realy realy well

[@NightmareZV]

well he does the high pitch in "Show 'em what your made of"
so yeah :B

[@MaDaB1]

Brian head voices that though. He can still head voices pretty good and falsetto pretty good as well.

[@NightmareZV]

he's very good, but I still admire the five of them together, the five of them has an awesome voice even after 20 years, but what is the most, they still together

[@LisaTigressHardy]

Howie and Nick also do the falsetto with Brian. :)

[@wendywijnings]

:-D leuk

[@MeyEstJorg]

Awww @kevjen113 @alexcar_manzo