Pentatonix

Pentatonix (often abbreviated as PTX) is an American a cappella group of five vocalists originating from Arlington, Texas.Their work, mostly in, but not limited to, the pop music style, consists of covers of pre-existing songs and some original material, sometimes in the form of medleys. Their music is defined by their own arrangement style, a strong presence of low bass vocals, and a diverse range of vocal percussions. Pentatonix formed in 2011 and came to prominence the same year by winning the third season of The Sing-Off on NBC, their victory earning them $200,000 and a recording contract with Sony.[4][5] Their debut EP PTX, Volume 1 was released the following year, followed by PTXmas the same year, with their third release, PTX, Vol. II, debuting number 1 on the Independent Albums section of the Billboard 200 in 2013. 2014 saw the release of PTX, Vol. III, and their two first full-length albums, PTX, Vols. 1 & 2 (a compilation of Vol. 1 and Vol. II) and That's Christmas to Me. They have sold over 500,000 records. Pentatonix started their popular YouTube site back in 2012 to promote themselves after the Sing-Off (Season 3, 2011) when they were dropped by their record label, according to a recent November 2014 interview. They also made effective use of social media to interact with their fan base.[7] Having eclipsed 6.7 million subscribers and more than 670 million cumulative views, the PTXofficial YouTube page is currently the 13th most subscribed-to music channel (as of 26 November 2014). Their music video for "Daft Punk" recently surpassed 103 million views