Utada Hikaru Single Collection Vol. 2 is Japanese pop singer-songwriter Hikaru Utada's second compilation album, released on November 24, 2010 by EMI Music Japan, the same day as her Universal-released English language compilation album, Utada the Best. The album includes two discs, with the first being a 13-track greatest hits album spanning 2004—2009, while the second is an extended play featuring new material. Along with Utada the Best, this is Utada's current last album release for the time-being due to her announced hiatus. Several of the new songs achieved commercial success, with "Goodbye Happiness" reaching number one on Billboard's Japan Hot 100 chart, and "Can't Wait 'Til Christmas" reaching number one on the Recording Industry Association of Japan's digital track chart. Both songs have been certified by the association as gold records for full-length cellphone downloads.
According to Oricon, the album sold 334,000 copies by the end of 2010, being the #20 best-selling album of the year in Japan. The album also became the 56th best-selling album for 2011 in Japan, selling 108,000 copies since early 2011, summing up to a total of 443,000 units since its release date; however, Utada Hikaru Single Collection Vol. 2 still remains Utada's lowest-selling Japanese album to date. The album is certified Double Platinum by RIAJ for shipping half-a-million units to Japanese record stores.
In a blog entry dated August 9, 2010, Utada announced the greatest hits album, as well as a planned hiatus. Utada does not consider the hiatus her retiring from music, as she enjoys the process of making music, and considers herself a musician. Furthermore, Utada still has a contract to fulfill with EMI Group, a contract signed in 2010 to release music globally under her name Hikaru Utada. Utada explained in an interview on Tokio Hot 100 that the hiatus was to ground her, as since she was 15 she had not grown up, and had no concept of 'true personal growth'. During her hiatus, she intends to do overseas volunteer work, learn French and re-establish relationships with her relatives, such as with her father and manager Teruzane Utada, who she admitted not even meeting outside of work.
The first disc is a collection of Utada's physical and digital singles released from her albums Ultra Blue (2006) and Heart Station (2008) in a reverse chronological order. This includes the 2009 Russell McNamara remix of "Beautiful World" for the film Evangelion: 2.0 You Can (Not) Advance, "Beautiful World (Planitb Acoustica Mix)," however the collection does not include "Fight the Blues," the lead digital single from Heart Station, or her 2008 digital single "Eternally (Drama Mix)," a re-arrangement of a song from her 2001 album Distance for use in the drama Innocent Love.
The second disc of the album features five previously unpublished songs. The songs, except for "Can't Wait 'Til Christmas," are all composed in a single coherent manner, with Utada writing about reconciling with herself, her past and her true self. Utada believes that this manner of writing was similar to her writing style for her debut Japanese album, First Love. Utada tweeted on September 28 that she was still in the process of writing the lyrics to the final song. Utada wrote "Arashi no Megami" as a thank you song for her mother, Keiko Fuji. "Show Me Love (Not a Dream)" was inspired by the feelings Utada felt while making her decision to go on hiatus. "Goodbye Happiness" was written while attempting to write a love song.