A Great Big World performs in vibrant spaces of sound. As the 2015 Grammy's choice for Best Pop Duo Performance, the native New Yorkers felt at home on Wednesday evening at the Gramercy Theater. Lead duo, Ian Axel and Chad King's families were also present for the show.

Coming out with "All I Want Is Love," the concert was led by Ian Axel and Chad King. The pair met at NYU, where Axel asked King to write a song together. A Simon and Garfunkel-esque energy reflected in their lower key songs, while the guitarist, bassist and drummer followed their lead. Axel and King's breakthrough came in televised waves. Glee's cast performed "This Is The New Year," in 2013. Afterwards, A Great Big World re-branded themselves with a crowd funded Kickstarter campaign.

They rocked an upbeat set and tore into their latest album, "When The Morning Comes." A mellow rendition of "Hold Each Other" was met with guest verses by Futuristic. The song was written with the intent to override the average pop radio hits, by vocalizing same-sex love.

Standing in the packed theater, my fears faded from the Bataclan attack. The idea of being present brought the young band together. Living without fear was reason enough to see A Great Big World. There was still creeping paranoia, but it did not outlast their sweeping performance.

RipCurl, a group of 15 male vocalists came onstage to open for A Great Big World. A Great Big World asked RipCurl to open the NYC show after discovering RipCurl's insanely good, "I Really Want It" cover on Youtube. Soon after, A Great Big World topped it with their hit single, "Say Something," leaving the audience clamoring for more.

Inviting a string quartet onstage, their modern pop was balanced against an orchestral backdrop. The ensemble riffed with "One Step Ahead" and "Everyone Is Gay." They returned onstage for their encore of "Don't Wait Shorty," and had RipCurl join them again. The balance felt right at home.

A Great Big World shared songs from their latest album. Axel asked for the crowd's presence during the act. Becoming part of the show, he had one side of the audience in the venue clap and the other side cheer.

In his words, "Now is the only moment worth living."

ALL PHOTOS BY CONTRIBUTING EDTIOR, EMILY HARRIS