Background: Kara (Hangul: kara, Japanese: kara, often stylized as KARA) was a South Korean pop girl group formed by DSP Media in 2007. The group's final lineup was composed of Park Gyuri, Han Seungyeon, Goo Hara and Heo Youngji. Members Nicole Jung and Kang Ji-young officially departed from the group in 2014, while Kim Sung-hee left in 2008. The group's name comes from the Greek word "chara" (khara, lit. "joy"), which they interpreted to mean "sweet melody".
Context: The group was scheduled to have their comeback in March 2008 with their second album, however, member Kim Sung-hee suddenly announced that she would be leaving the group due to parental pressure because her participation in the group was contingent on the maintenance of her grades. In response, DSP stated that the second album that was recorded would be shelved and replaced by a mini-album to come in May; in addition, two members would join the group. Auditions were held, and the two new members were eventually revealed to be Goo Ha-ra and Kang Jiyoung. The group made their return in the music industry as a quintet on July 24, 2008 with "Rock U" on M! Countdown. They made their comeback with the "cute" and "playful" image which was the complete opposite of the group's original image from their debut. In the same month, their first mini-album titled Rock U was also released. The second season of Kara Self Camera was premiered on August 18, 2008, which chronicled how the group was adapting to their two new members.  On November 29, 2008, DSP released a teaser video for their upcoming single, "Pretty Girl", which received over 40,000 hits within 12 hours. The full video was released on December 2, 2008 online and was positively received by the public. The EP, Pretty Girl, was released on December 4, embodying a "fun-party" concept. The group began its comeback on all major music shows on December 4, 2008, starting with M! Countdown. During their first national performance on KBS's Music Bank, member Goo Hara accidentally gasped "ah!" live on air due to slipping on falling confetti, and reportedly cried profusely afterwards. The incident became a hot issue to many viewers, but Goo Hara received comfort instead of criticism from the general public.  Park Gyuri attributed their popularity increase to their "pretty but natural" appeal, while media reports gave credit to the band for finally finding its own identity in the music industry since the group's debut and to older male fans, most notably singer Shin Hae Chul. Due to their increasingly hectic schedule as their popularity rose, a few of the group's members were taken to the hospital on December 19 after a Music Bank rehearsal for cold symptoms and exhaustion.
Question: did they have a replacement?
Answer: Auditions were held, and the two new members were eventually revealed

Background: Leslie Feist was born on 13 February 1976 in Amherst, Nova Scotia, Canada. Her parents are both artists. Her father, Harold Feist, is an American-Canadian abstract expressionist painter who taught at both the Alberta College of Art and Design and Mount Allison University in Sackville, New Brunswick. Her mother, Lyn Feist, was a student of ceramics from Saskatchewan.
Context: In early 2006, Feist moved to Paris, where she recorded a followup to Let It Die at LaFrette Studios with Gonzales, Mocky, Jamie Lidell, and Renaud Letang, as well as her touring band Bryden Baird, Jesse Baird, Julian Brown of Apostle of Hustle, and Afie Jurvanen of Paso Mino.  Feist's third solo album, The Reminder, was released on 23 April 2007 in Europe, and on 1 May 2007 in Canada, the USA, and the rest of the world. She toured worldwide to promote the album. The album features "1234," a song co-written by New Buffalo's Sally Seltmann, that became a surprise hit after being featured in a commercial for the iPod nano, hitting No. 8 in the US, a rare feat for indie rock musicians and even more notable since it hit the Top Ten on the strength of downloads alone. She has been lauded in the press and was featured on the cover of the New York Times arts section in June 2007. The Reminder had sold worldwide over 1,000,000 copies and is certified gold in the U.S. The album also won a 2008 Juno Award for "Album of the Year" on 6 April 2008 in Calgary, Alberta.  Videos for many of the singles were directed by Patrick Daughters, who previously directed the video for "Mushaboom" and went on to direct "1234," "My Moon, My Man," and "I Feel It All." "1234" and "My Moon, My Man" were choreographed by the acclaimed choreographer & dancer Noemie Lafrance. The video for Honey, Honey features the work of avant-garde puppet troupe, The Old Trout Puppet Workshop.  "I Feel It All" was featured in the UK teen comedy The Inbetweeners and was used in the film The Accidental Husband. "Honey Honey" was featured in The L Word (episode 5.06, "Lights! Camera! Action!"). "I Feel It All" was featured in the 2008 film The Women. Popular German DJ Boys Noize remixed "My Moon, My Man," which appears on his 2007 debut album Oi Oi Oi. The DJ has also been known to close sets with the remix. In January 2009, Bon Iver played a cover of Feist's "The Park" from The Reminder on Australian radio's Triple J. The song "Limit to Your Love" was featured in season 2, episode 1 of British teen drama Skins, and was used in the film The Accidental Husband. A cover version of the song was released by UK singer-producer James Blake as a single from his 2011 self-titled album.
Question: What made this song so great
Answer:
that became a surprise hit after being featured in a commercial for the iPod nano, hitting No. 8 in the US, a rare feat for indie rock musicians