Question: What Oslo based Norwegian singer-songwriter was featured in the fourth studio album by American rapper Tyler, the creator?

Context paragraphs:
Who Dat Boy: "Who Dat Boy" is a song by American rapper Tyler, The Creator.  It was released on June 30, 2017 alongside, "911 / Mr. Lonely" through Columbia Records, as the lead singles from his fourth studio album "Flower Boy".  The song features vocals from ASAP Rocky.

Flower Boy: Flower Boy (alternatively titled Scum Fuck Flower Boy) is the fourth studio album by American rapper Tyler, The Creator.  The album, which is his first under a major record label, was released on July 21, 2017, by Columbia Records.  Although the album's production was handled entirely by Tyler, The Creator himself, it features guest vocals from a range of artists, including Frank Ocean, ASAP Rocky, Anna of the North, Lil Wayne, Kali Uchis, Steve Lacy, Estelle, Jaden Smith and Rex Orange County.

911 / Mr. Lonely: "911 / Mr. Lonely" is a song by American rapper Tyler, The Creator.  It was released on June 30, 2017 alongside, "Who Dat Boy" through Columbia Records, as the lead singles from his fourth studio album "Flower Boy".  The song was produced by Tyler himself and features vocals from Frank Ocean, The Internet's Steve Lacy and Norwegian singer Anna of the North.

Changing of the Seasons: Changing of the Seasons is the fourth studio album by Norwegian singer-songwriter Ane Brun, released on 12 March 2008 in Norway and Sweden, 14 October 2008 in the US, and on 2 February 2009 in the UK.  The album became her breakthrough record outside of Scandinavia when the bonus track "True Colors", a cover of the 1985 Cyndi Lauper song, was used in a television advertisement for Sky+ HD in the United Kingdom and Ireland.  The other bonus track is a cover of Alphaville's 1984 hit single "Big in Japan", recorded as part of the soundtrack for the Swedish TV documentary programme "Stor i Japan".  The version of the album with the two bonus tracks was released in Europe on 7 December 2008 and in the UK in February 2009.  The French release of the album on 12 October 2009 contained a third bonus track, a version in French of "Koop Island Blues", a song Brun originally recorded in 2006 with Swedish jazz group Koop.

Anna of the North: Anna Lotterud (born 8 June 1989), better known by her stage name Anna of the North, is an Oslo-based Norwegian singer-songwriter from Gjøvik.  Her music has been regarded as "soft, soul-bearing electro-pop".

Wolf (Tyler, The Creator album): Wolf is the second studio album by American rapper Tyler, The Creator.  It was released on April 2, 2013, by Odd Future Records and RED Distribution.  "Wolf" contains the elements that set in a different direction compared to his other materials such as "Bastard" (2009) and "Goblin" (2011) respectively, which featured more violent content, while the album features a more production based sound and different themes.  The album features guest appearances from Mike G, Domo Genesis, Earl Sweatshirt, Left Brain, Hodgy Beats, Erykah Badu and Pharrell, among others.  The album was produced by Tyler, The Creator himself, except for the final track.

Ten Love Songs: Ten Love Songs is the fourth studio album by Norwegian singer-songwriter Susanne Sundfør, released on 16 February 2015 by the label Warner Music Norway.  Sundfør began writing her sixth album in 2012 with the intention of it being about violence, but as she noticed themes of love and relationships coming into place of all the songs she was writing for the album, she titled the LP "Ten Love Songs".

Yonkers (song): "Yonkers" is a song by American hip hop artist and Odd Future member Tyler, The Creator, released as the lead single from his debut studio album "Goblin".  It was produced by Tyler, the Creator.  The single was released digitally on February 14, 2011.  The song received controversy due to its violent lyrics and numerous "disses", although it was critically acclaimed, landing on numerous year-end lists.  Tyler also directed a music video for the single, which was also met with positive critical reception, giving Tyler the MTV Video Music Award for Best New Artist at the 2011 MTV Video Music Awards.  Numerous magazine publications noted "Yonkers" as Tyler, the Creator and Odd Future's breakout song.  The late American rapper Capital Steez sampled it in his song "Negus", using the same opening line: "I'm a fucking walking paradox".  The song was featured in the soundtrack to the video game "".

Goblin (album): Goblin is the debut studio album by American rapper Tyler, The Creator.  It was released on May 10, 2011, by XL Recordings.  The album's production came almost entirely from Tyler himself, along with contributions from fellow Odd Future member Left Brain.  "Goblin" continues Tyler's dialogues with his fictional therapist Dr. TC, first heard on "Bastard".

Cherry Bomb (album): Cherry Bomb is the third studio album by American rapper Tyler, The Creator.  It was released on April 13, 2015, by Odd Future Records and Columbia Records.  On April 9, 2015, the album was informally announced on iTunes, along with the release of two tracks.  The album features guest appearances from Schoolboy Q, Charlie Wilson, Kali Uchis, Kanye West, Lil Wayne and Pharrell Williams, among others.  The album was supported by two singles: "Deathcamp" and "Fucking Young / Perfect".  The snippet of a music video for "Deathcamp" was sharing with a music video for "Fucking Young".

Supporting paragraphs: Flower Boy Anna of the North
Answer: Anna of the North