Question: What girl group was a star of Bad Day part of?

Context paragraphs:
KTGX: KTGX (106.1 FM) is a radio station licensed to Owasso, Oklahoma, United States.  The station serves the Tulsa area.  The station operates on FM frequency 106.1 MHz and is under ownership of iHeartMedia, Inc..  Its studios are located at the Tulsa Event Center in Southeast Tulsa and its transmitter site is near Talala, Oklahoma.  It's on-air talent by day part include: Mornings: The Bobby Bones Show, Middays: Karla Cantrell, Afternoons: Houston Gaither, Nights: Ashley King.

Bad Day at Cat Rock: A Bad Day at Cat Rock is a 1965 Tom and Jerry cartoon produced and directed by Chuck Jones as essentially a remake of his 1963 Wile E. Coyote and Road Runner cartoon "To Beep or Not to Beep".  Maurice Noble was the cartoon's co-director, the animation was credited to Ben Washam, Ken Harris, Don Towsley and Dick Thompson.  The music was scored by Eugene Poddany and backgrounds by Phil DeGuard.  Mel Blanc was on hand to supply the screams, yells, and other vocal effects.  The cartoon's title is a pun on the MGM film "Bad Day at Black Rock", though the cartoon's plot bears with no resemblance.

Bad Girl Good Girl: "Bad Girl Good Girl" is a song recorded by K-pop girl group Miss A for their debut EP "Bad But Good".  The song served as the group's debut single in July 2010.  "Bad Girl Good Girl" became an instant commercial success in South Korea, topping the Gaon Digital Chart.

The Right Place: The Right Place is the third studio album by American country music artist Bryan White.  It was released in 1997 (see 1997 in country music) on Asylum Records.  The album produced four chart singles on the "Billboard" Hot Country Singles & Tracks (now Hot Country Songs) charts.  In order of release, these were "Love Is the Right Place", "One Small Miracle", "Bad Day to Let You Go", and "Tree of Hearts", which respectively reached numbers 4, 16, 30, and 45.  "Bad Day to Let You Go" also overlapped with White's guest appearance on Shania Twain's 1998 single "From This Moment On".

Resolve (song): "Resolve" is the third single from Foo Fighters album "In Your Honor".  It was released on 21 November 2005.  It has been released on two different discs.  In "The West Wing" episode, "Election Day Part I", the band is seen playing this song at a campaign party for Democratic Presidential candidate Matt Santos.

Bad Day for Trains (song): "Bad Day for Trains" is a song recorded by Canadian country music artist Patricia Conroy.  It was released in 1992 as the second single from her second studio album, "Bad Day for Trains".  It peaked at number 7 on the "RPM" Country Tracks chart in November 1992.

Sarah Harding: Sarah Nicole Harding (born Sarah Nicole Hardman; 17 November 1981) is an English singer-songwriter, dancer, model, and actress.  She rose to fame in late 2002 when she auditioned for the reality television show "" on ITV.  The programme announced that Harding had won a place as a member of the girl group, Girls Aloud.  The group has achieved massive success, having twenty consecutive top ten singles (including four number ones) in the UK, six studio albums have all been certified platinum by the British Phonographic Industry (BPI), two of which went to number one in the UK, and accumulating a total of five BRIT Award nominations.  In 2009, Girls Aloud won "Best Single" with their song "The Promise".

Have a Bad Day: Have a Bad Day is an album by The Residents, released in 1996.  This CD features some of the soundtrack music from the CD-ROM "Bad Day on the Midway", also by The Residents.

Bad Day (film): Bad Day is an independent British film starring Claire Goose, Donna Air, Sarah Harding, Anthony Ofoegbu and Robbie Gee.  It is the latest feature film from director Ian David Diaz, whose past films include "The Killing Zone", "Dead Room" and "Fallen Angels".

Free Loop (One Night Stand): "Free Loop (One Night Stand)" (titled as "Free Loop" on "Daniel Powter") is a pop song written by Canadian singer Daniel Powter.  It was his second single and the follow-up to his successful song, "Bad Day".  It did not achieve the success of its predecessor.  In the UK, WEA failed to realize the single was deemed ineligible to chart since "Bad Day" was included as B-side whilst still being in the UK Top 40 at the time.  In the U.S., it did not chart on the "Billboard" Hot 100, but it did crack the Top 30 of Billboard's Adult Contemporary chart.  On 2016 an ios/android app made by Cheetah Mobile, Piano Tiles 2 these song has been use in level.

Supporting paragraphs: Bad Day (film) Sarah Harding
Answer: Girls Aloud