In December 2012, You Tube announced that Stirling's song, "Crystallize", was the No.
So this is kind of a fulfillment – it's funny to say, but this is something I've always wanted to do." She impressed the judges on America's Got Talent, not only by mixing hip-hop, pop, and classical music on the violin, but by incorporating dancing with playing the violin, which she also does on her tours and official music videos.
During 2011, the channel rapidly gained popularity and has over 1.5 billion total views and over eight million subscribers, as of October 2016 Stirling's collaborations with other musicians and singers have included Shaun Barrowes ("Don't Carry It All" – The Decemberists), Jake Bruene and Frank Sacramone ("Party Rock Anthem" – LMFAO), Tay Zonday ("Mama Economy"), Peter Hollens ("Skyrim", "A Thousand Years", "Game of Thrones" and "Star Wars"), Lzzy Hale ("Shatter Me"), Alisha Popat ("We Found Love"), John Allred ("Tomb"), Amiee Proal ("A Thousand Years"), Megan Nicole ("Starships"), The Piano Guys ("Mission Impossible"), Debi Johanson ("River Flows in You", "Phantom of the Opera"), Sam Tsui ("Heads Up"), Tyler Ward ("I Knew You Were Trouble", Thrift Shop"), Kurt Hugo Schneider ("Pokemón Dubstep Remix" and "A Thousand Years"), John Legend ("All of Me"), Chester See ("I Knew You Were Trouble"), and Pentatonix ("Radioactive", "Papaoutai").
Stirling's eponymous debut album was released on September 18, 2012 in conjunction with a North American tour that same month.
and in July, she joined Nathan Pacheco, The Orchestra at Temple Square and the Mormon Tabernacle Choir at the 21,000-seat LDS Conference Center in Salt Lake City, UT for their annual Pioneer Day concert.
and on September 4, after almost a year of touring, she completed her first world tour with her last appearance in London.