Black also stated that she is a fan of Justin Bieber, and expressed interest in performing a duet with him. MTV selected Black to host its first online awards show, the O Music Awards Fan Army Party, in April 2011. As an homage to "Friday", Black appeared in the music video for Katy Perry's "Last Friday Night (T.G.I.F.)", in which Black plays alongside Perry as the hostess of a party Perry attends. A cover of "Friday" was performed on Glee in the second-season episode, "Prom Queen". When asked about why the song was covered on Glee, show creator Ryan Murphy replied, "The show pays tribute to pop culture and, love it or hate it, that song is pop culture." Not long after the "Friday" video went viral on YouTube, Black and her mother, Georgina Kelly, got into legal issues with ARK Music over rights to the song. In a letter from Kelly's lawyer to ARK Music on March 29, 2011, it was alleged that ARK Music failed to fulfill the terms of their November 2010 agreement by not giving her the song and video's master recordings, by claiming Black as exclusively signed to the label, and by exploiting the song without permission – for example, selling a "Friday" ringtone. While Ark founder (and "Friday" co-writer) Patrice Wilson stated that Kelly "will get the masters and the song [...] [t]hey can have it all", and agreed that Black was not exclusive to Ark, his attorney claimed that Ark owns the copyright for the song and the November agreement is invalid. In June 2011, ARK Music Factory started charging $2.99 (equivalent to $3.4 in 2019) to watch the music video on YouTube. Later that month, "Friday" was removed as a result of the legal dispute; it was restored to YouTube on September 16, 2011, on Black's official channel. "Friday" was revealed as YouTube's No. 1 video of 2011, with Black hosting a short video called "YouTube Rewind" in the year-end recap. The video received more than 167 million views and more than 3,190,000 "dislikes" during its first four months, prior to its temporary removal. After the fallout with ARK Music Factory, Black started an independent record label named RB Records.

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