Kiesza is one of Pandora's most popular new artists.

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The cold, pouring rain didn't stop music fans from waiting in line to get into Pandora's holiday bash. The music streaming company threw it's second annual holiday party Saturday night, offering free admission on a first come, first get in basis.

British electronica band Rudimental kicked off the show with a high-energy performance that turned the venue into a dance party. Featuring two DJs, two vocalists and a trumpet player, the layered bass and catchy hooks made for a fun hour. With the fivesome dancing and drinking on stage, it felt a little like they were letting the audience in on their own, private party.

Kiesza, who Pandora claims is enormously popular with their users, took the stage next. Known for her hit, "Hideaway," the dance pop artist and her two backup dancers kept the energy level up, only slowing it down for her new album's title track, "Sound of a Woman." At the end of her set, Kiesza crowd-surfed for the first time in her life, much to the crowd's delight.

The Neighbourhood performed last, in an eerie set that played heavily with lighting. At times, the audience could only see the silhouettes of singer Jesse Rutherford and his band mates. It might sound strange, but it worked, matching the band's moody songs.