Question: Pitch Perfect is a 2012 American musical comedy film, it features an ensemble cast, including which American actress and singer, and is known for her role as Sarah Newlin in "True Blood", and her recurring roles in "Mad Men"?

Context paragraphs:
John Slattery: John M. Slattery Jr. (born August 13, 1962) is an American actor and director.  He is best known for his role as Roger Sterling in the AMC drama series "Mad Men" and for his role as Howard Stark in cameo appearances in the Marvel Cinematic Universe films "Iron Man 2", "Ant-Man", and "".  He has received four Primetime Emmy Awards nominations and two Critics' Choice Television Awards for "Mad Men".  He was also part of the "Mad Men" ensemble cast that won two SAG Awards.

Hailee Steinfeld: Hailee Steinfeld (born December 11, 1996) is an American actress and singer.  She first became known for her portrayal of Mattie Ross in "True Grit" (2010), which earned her an Academy Award nomination.  Thereafter, she appeared as Petra Arkanian in "Ender's Game" (2013), Juliet Capulet in "Romeo & Juliet" (2013), Violet Mulligan in "Begin Again" (2013), Zooey Renner in "3 Days to Kill" (2014), Emily Junk in "Pitch Perfect 2" (2015) and "Pitch Perfect 3" (2017), and Nadine Franklin in "The Edge of Seventeen" (2016), the last for which she received a Golden Globe Award nomination.

Pitch Perfect 2: Pitch Perfect 2 is a 2015 American musical comedy film directed and co-produced by Elizabeth Banks and written by Kay Cannon.  It is a sequel to the 2012 film "Pitch Perfect" and the second installment in the "Pitch Perfect" series.  The film centers on the fictional Barden University and The Bellas, an all-female a cappella singing group.  The film features an ensemble cast, including Anna Kendrick, Rebel Wilson, Hailee Steinfeld, Brittany Snow, Alexis Knapp, Hana Mae Lee, Ester Dean, Chrissie Fit, Kelley Jakle and Shelley Regner as The Bellas.  It was released on May 15, 2015 by Universal Pictures.

Pitch Perfect (film series): Pitch Perfect is a series of musical comedy films created by Kay Cannon, loosely based on the non-fiction book "Pitch Perfect: The Quest for Collegiate a Cappella Glory" by Mickey Rapkin.  Jason Moore directed the first film, and Elizabeth Banks directed the second, with the upcoming third installment set to be released on December 22, 2017.  Paul Brooks, Max Handelman, and Banks produced the films.  It features an ensemble cast, including Anna Kendrick, Rebel Wilson, Anna Camp, Brittany Snow, Skylar Astin, Adam DeVine, Ben Platt, Alexis Knapp, Hana Mae Lee, Ester Dean, Hailee Steinfeld, Chrissie Fit, Katey Sagal, John Michael Higgins, and Banks.  The series is distributed by Universal Pictures.

Anna Camp: Anna Ragsdale Camp (born September 27, 1982) is an American actress and singer.  She is known for her role as Sarah Newlin in "True Blood", and her recurring roles in "Mad Men", "The Good Wife", and "The Mindy Project".  She is also known for her role as Aubrey Posen in "Pitch Perfect" (2012), "Pitch Perfect 2" (2015), and the upcoming "Pitch Perfect 3" (2017).  She made her Broadway debut in the 2008 production of "A Country House" and played Jill Mason in the 2008 Broadway revival of "Equus".  In 2012, she was nominated for a Drama Desk Award for her performance in the Off-Broadway play "All New People".  Camp played Jane Hollander, a researcher for the fictitious "News of the Week" magazine in the Amazon series "Good Girls Revolt."  She also had a role in the 2011 film "The Help".

Pitch Perfect: Pitch Perfect is a 2012 American musical comedy film written by Kay Cannon and directed by Jason Moore.  It features an ensemble cast, including Anna Kendrick, Skylar Astin, Rebel Wilson, Anna Camp, Brittany Snow, Ester Dean, Alexis Knapp, Hana Mae Lee, Adam DeVine, Ben Platt, John Michael Higgins, and Elizabeth Banks.  The plot follows Barden University's all-girl a cappella group, The Barden Bellas, as they compete against another a cappella group from their college to win Nationals.  The film is loosely adapted from Mickey Rapkin's non-fiction book, titled "Pitch Perfect: The Quest for Collegiate a Cappella Glory".  Filming concluded in December 2011, in Baton Rouge, Louisiana.

Shelley Regner: Shelley Anne Regner (born December 21, 1988) is an American actress and singer known for her role as Ashley in the musical films "Pitch Perfect" (2012) and its sequel "Pitch Perfect 2" (2015).  She will be returning for the third installment, "Pitch Perfect 3" (2017).

Elizabeth Banks: Elizabeth Irene Banks (née Mitchell; February 10, 1974) is an American actress, director, and producer.  Banks made her film debut in the low-budget independent film "Surrender Dorothy" (1998), and is known for her roles in such films as "Wet Hot American Summer" (2001), Sam Raimi's "Spider-Man" trilogy (2002–2007), "Seabiscuit" (2003), "The 40-Year-Old Virgin" (2005), "Zack and Miri Make a Porno" (2008), "Role Models" (2008), "The Next Three Days" (2010), "Pitch Perfect" (2012), "The Lego Movie" (2014), and "The Hunger Games" film series (2012–2015).  In 2014, she portrayed Melinda Ledbetter, the girlfriend and later wife of the Beach Boys co-founder Brian Wilson, in the biographical drama "Love & Mercy" and made her directorial debut with "Pitch Perfect 2", whose $69M opening weekend gross set a record for a first-time director.

Alexis Knapp: Alexis Merizalde Knapp (born July 31, 1989) is an American actress and singer.  She is known for her role as Stacie Conrad in the musical films "Pitch Perfect" (2012) , "Pitch Perfect 2" (2015) and the upcoming "Pitch Perfect 3".  She is also known for her role of Alexis in the party film "Project X" (2012), and her role on the first season of the TBS comedy "Ground Floor".

Pitch Perfect 3: Pitch Perfect 3 is an upcoming American musical comedy film directed by Trish Sie and written by Kay Cannon.  A sequel to "Pitch Perfect 2" (2015) and the third and final installment in the "Pitch Perfect" trilogy, the film will star Anna Kendrick, Anna Camp, Rebel Wilson, Brittany Snow, Hailee Steinfeld, Alexis Knapp, Ester Dean, Hana Mae Lee, Chrissie Fit, Kelley Jakle and Shelley Regner, with Elizabeth Banks and John Michael Higgins.  The film is scheduled to be released on December 22, 2017.

Supporting paragraphs: Pitch Perfect Anna Camp
Answer: Anna Camp