Big Time Movie Soundtrack is the second EP by pop group Big Time Rush.
 The EP is the soundtrack of the television film "Big Time Movie", which is based on the Nickelodeon series "Big Time Rush".
 It was released on March 6, 2012.
Big Time Movie is a television film adaptation based on the Nickelodeon television series, "Big Time Rush" and the songs of The Beatles, which aired March 10, 2012 in the United States.
 It features the members of Big Time Rush (a.k.a. the TV show and the band members) visiting London for their world tour, where they also have to save the world.
Carlos Roberto PenaVega (born Carlos Roberto Pena Jr.; August 15, 1989) is an American actor and singer.
 He is best known for starring on the Nickelodeon series "Big Time Rush" as Carlos García in addition to being a member of the band Big Time Rush.
 He was the host of the Nickelodeon game show "Webheads".
Big Time Concert (also known as Big Time First Concert) is the 2010 second made-for-television movie of the series film franchise/season one finale for the television series, "Big Time Rush".
 It stars Kendall Schmidt, James Maslow, Carlos Pena Jr., Logan Henderson, Ciara Bravo, and Stephen Kramer Glickman.
 It premiered on Nickelodeon on August 20, 2010 at 8:00 p.m. ET.
 This movie included many recurring and guest star roles.
 It also featured the second and more major appearance of Phil LaMarr as Hawk, Gustavo's rival, who appears in "Big Time Sparks".
 In the movie, Hawk is the main villain.
Big Time Christmas is a 2010 teen made-for-television film based on the Nickelodeon TV series "Big Time Rush".
 It has also been broadcast divided in two parts that serve as the third film of the series film franchise of "Big Time Rush" and the season two eighth and ninth episodes of the series.
 It stars Kendall Schmidt, James Maslow, Carlos Pena Jr. and Logan Henderson as Big Time Rush and also Miranda Cosgrove, Snoop Dogg, Tanya Chisholm and Stephen Kramer Glickman.
 It aired December 4, 2010.
Rick Seibold ( ; born April 16, 1983) is an American singer-songwriter from Wilmington, North Carolina, now based in Los Angeles.
 Seibold has received considerable recognition as an independent recording artist from his debut record "That's the Day".
 He has worked with artists such as Lee DeWyze, David Archuleta, Katelyn Tarver, Kat DeLuna, and Alex Lambert.
Logan Phillip Henderson (born September 14, 1989) is an American actor and singer.
 He is best known for his role as Logan Mitchell on the Nickelodeon series, "Big Time Rush", as well as being a former member of the Big Time Rush band itself.
 He, along with the band, have won and been nominated for multiple awards over the past few years.
Big Time Rush (also known as BTR) was an American boy band pop group formed in 2009.
 The group consisted of Kendall Schmidt, James Maslow, Logan Henderson, and Carlos Pena, Jr. The group starred in Nickelodeon's television series "Big Time Rush" and signed to a record deal with Nick Records simultaneously with the television series, and then the group was eventually signed to Columbia Records.
 The show ran from November 28, 2009 to July 25, 2013.
 The pilot episode featured the group's first promotional single, "Big Time Rush".
 They have released three studio albums which all achieved success.
 The band stopped performing in 2014.
The Summer Break Tour was a headlining concert tour by American pop boy band, Big Time Rush that featured American pop artist, Victoria Justice.
 This was Big Time Rush's third consecutive headlining tour, and Justice's second overall tour.
 The tour supported Big Time Rush's third studio album "24/Seven" and Justice's music from the television show "Victorious".
 The tour played 40 shows in North America.
Katelyn Tarver (born November 2, 1989) is an American actress and singer.
 She is known for her recurring roles as Jo Taylor on the Nickelodeon series "Big Time Rush", Natalie on the ABC series "No Ordinary Family", and Mercedes on ABC Family "The Secret Life of the American Teenager".

Question: Rick Seibold has worked with what artist known for her role in "Big Time Rush"?
Answer: Katelyn Tarver