Knightley co-starred with Steve Carell in the 2012 comedy drama "Seeking a Friend for the End of the World". Later that year, she reunited with director Joe Wright to film their third production together, "Anna Karenina", in which she starred as the title character. She deemed her collaboration with Wright as the most important of her career. Knightley received positive reviews for her performance, prompting early Oscar buzz. The 2013 Toronto International Film Festival saw the release of Knightley's first musical film "Begin Again" with Mark Ruffalo. The film, which was directed by John Carney, had its theatrical release in 2014. Carney later repeatedly criticised Knightley's performance in the film, saying she was not convincing enough in portraying a singer-songwriter and continuously describing her as a "model" rather than an actor. He later apologised to her on "Twitter" for his comments. Knightley revealed in July that music does not "sink in" for her, and she is more interested in books and drama. Later that year, she appeared in Karl Lagerfeld's short period film "Once Upon a Time..."