Question: What song did the 2018 Grammy winner for best pop vocal album write for Justin Bieber?

full_context: Document 1: Grammy Award for Best Contemporary Performance by a Chorus: The Grammy Award for Best Contemporary Performance by a Chorus was awarded in 1969 (as Best Contemporary Pop Performance, Chorus) and in 1970. In some years, the Grammy Award for Best Pop Performance by a Duo or Group with Vocal also included performances by a chorus.
Document 2: Love Yourself: ``Love Yourself ''is a song recorded by Canadian singer Justin Bieber for his fourth studio album Purpose (2015). The song was released first as a promotional single on November 8, 2015, and later was released as the album's third single. It was written by Ed Sheeran, Benny Blanco and Bieber, and produced by Blanco. An acoustic pop song,`` Love Yourself'' features an electric guitar and a brief flurry of trumpets as its main instrumentation. During the song, Bieber uses a husky tone in the lower registers. Lyrically, the song is a kiss - off to a narcissistic ex-lover who did the protagonist wrong.
Document 3: Somebody to Love (Justin Bieber song): "Somebody to Love" is a song performed by Canadian recording artist Justin Bieber. The song served as the second single from his album, "My World 2.0". It was written by Heather Bright and The Stereotypes, and produced by the latter. The song was originally recorded as a demo by Bieber's mentor, R&B singer, Usher, for his sixth studio album, "Raymond v. Raymond" (2010). After things went stale with Usher's label, The Stereotypes were encouraged to give the song to Bieber, who recorded it, with Usher performing background vocals. The song is an upbeat pop song, which also derives from R&B genre, while making use of Eurodisco influences. It impacted US mainstream and rhythmic radio on April 20, 2010. The remix of the song featuring Usher was featured on Bieber's first compilation album "" and his second remix album "".
Document 4: Grammy Award for Best Blues Album: The Grammy Award for Best Blues Album was an award presented at the Grammy Awards, a ceremony that was established in 1958 and originally called the Gramophone Awards, to recording artists for releasing albums in the blues genre. Honors in several categories are presented at the ceremony annually by the National Academy of Recording Arts and Sciences of the United States to "honor artistic achievement, technical proficiency and overall excellence in the recording industry, without regard to album sales or chart position".
Document 5: Love Yourself: Tear: Love Yourself 轉 'Tear' (stylized as LOVE YOURSELF 轉 'Tear') is the third Korean studio album (sixth overall) by South Korean boy band BTS. The album was released on May 18, 2018 by Big Hit Entertainment. It is available in four versions and contains eleven tracks, with ``Fake Love ''as its lead single. The concept album explores themes relating to the pains and sorrows of separation. On May 27, 2018, the album debuted at number one on the US Billboard 200, earning 135,000 album - equivalent units becoming BTS 'highest - charting album in a Western market, as well as the first K - pop album to top the US albums chart and the highest - charting album by an Asian act.
Document 6: Starland Vocal Band: The Grammy Awards are awarded annually by the National Academy of Recording Arts and Sciences. The band won two awards from four nominations.
Document 7: List of awards and nominations received by R. Kelly: The Grammy Awards are awarded annually by the National Academy of Recording Arts and Sciences. Kelly has won three awards from 25 nominations. ``Lean On Me ''by Kirk Franklin, which features Kelly, has been nominated for three awards, only one is featured; the other two (Song of The Year and Best R&B Song) are for the songwriter Franklin. Other songs that Kelly has worked on, written and that have been nominated for a Grammy are: Best Pop Vocal Performance (`` You Are Not Alone''), Best R&B Male Vocalist (``Fortunate ''and`` When You Call On Me''),
Document 8: Love Yourself: Lyrically, ``Love Yourself ''is a kiss - off to a narcissistic ex-lover who did the protagonist wrong, with Bieber singing in a snappy and spiteful tone while`` hating on a girl for loving herself too much.'' In the pre-chorus, he sings with a husky tone in the lower registers: ``My mama do n't like you, and she likes everyone, ''`` in a style that molds well to Sheeran's,'' according to Rolling Stone's Brittany Spanos. ``And I (never) like to admit that I was wrong. And I've been so caught up in my job, did n't see what's going on, and now I know, I'm better sleeping on my own, ''he continues. In the chorus, Bieber sings,`` Cause if you like the way you look that much, oh baby you should go and love yourself,'' which according to Digital Spy's Amy Davidson, ``'love yourself' means' go f * * k yourself 'in this context. ''On March 7, 2017, composer Ed Sheeran stated on the Howard Stern Show that he had Rihanna in mind for the song at first, and the original lyric was indeed`` fuck yourself.'' In the song's bridge, Bieber uses a ``brass - and - vocalese ''style.
Document 9: Grammy Award for Best Pop Solo Performance: The Grammy Award for Best Pop Solo Performance is an award presented at the Grammy Awards, a ceremony that was established in 1958 and originally called the Gramophone Awards. According to the 54th Grammy Awards description guide it is designed for solo performance pop recordings (vocal or instrumental) and is limited to singles or tracks only.
Document 10: What Do You Mean?: ``What Do You Mean? ''is a song recorded by Canadian singer Justin Bieber for his fourth studio album Purpose (2015). The song was released on August 28, 2015, as the album's lead single by Def Jam. Written by Bieber, Jason`` Poo Bear'' Boyd and Mason Levy, the song was produced by MdL and co-produced by Bieber. ``What Do You Mean? ''is a pop and tropical house song, with its instrumentation consisting in light flourishes of panpipes, looped vocal samples, piano chords, fervent synths, bass and`` slick beat'' elements with the sound of a clock ticking, while Bieber uses a smooth, soulful vocal. Lyrically, ``What Do You Mean? ''describes not being able to figure out the opposite sex with Bieber asking a girl why her body language is conflicting with her words.
Document 11: Grammy Award records: Rank Artist Awards Alison Krauss 27 Beyoncé 22 Aretha Franklin 18 Adele 15 Alicia Keys 6 Ella Fitzgerald 13 Leontyne Price Emmylou Harris 9 Shirley Caesar 11 10 Chaka Khan 10 Bonnie Raitt Linda Ronstadt Taylor Swift CeCe Winans 15 Mary J. Blige 9 Natalie Cole Sheryl Crow Norah Jones Hillary Scott
Document 12: Grammy Award records: Rank Artist Awards Alison Krauss 27 Beyoncé 22 Aretha Franklin 18 Adele 15 Alicia Keys 6 Ella Fitzgerald 13 Leontyne Price Emmylou Harris 9 CeCe Winans 12 10 Shirley Caesar 11 11 Chaka Khan 10 Bonnie Raitt Linda Ronstadt Taylor Swift 15 Mary J. Blige 9 Natalie Cole Sheryl Crow Norah Jones Hillary Scott Rihanna
Document 13: Love Yourself: Answer: Love Yourself 結 'Answer' (stylized as LOVE YOURSELF 結 'Answer') is the third Korean - language compilation album by South Korean boy band BTS. The album was released on August 24, 2018 by Big Hit Entertainment and is available in 4 different versions: S, E, L, and F. The album contains twenty - five tracks (twenty - six for digital version), including seven new songs, with the track ``Idol ''serving as the lead single. Most tracks are from Love Yourself: Her, and Love Yourself: Tear, including some remixes. The album debuted at number one in South Korea, Canada and the United States, becoming BTS 'second chart - topping album in the US market.
Document 14: Love Yourself: Tear: Love Yourself 轉 'Tear' (stylized as LOVE YOURSELF 轉 'Tear') is the third Korean studio album (sixth overall) by South Korean boy band BTS. The album was released on May 18, 2018 by Big Hit Entertainment. It is available in four versions and contains eleven tracks, with ``Fake Love ''as its lead single. The concept album explores themes relating to the pains and sorrows of separation. It debuted at number one on the US Billboard 200, becoming BTS 'highest - charting album in a Western market, as well as the first K - pop album to top the US albums chart and the highest - charting album by an Asian act.
Document 15: Grammy Award for Best Pop Vocal Album: Grammy Award for Best Pop Vocal Album Awarded for Quality pop music albums Country United States Presented by National Academy of Recording Arts and Sciences First awarded 1968 Currently held by Ed Sheeran, ÷ (2018) Website grammy.com
ground_truth: ``Love Yourself ''
sub_queries: who won best pop vocal album grammys 2018 Answer: Ed Sheeran
what song did Ed Sheeran wrote for justin bieber Answer: ``Love Yourself ''