Question: Which song by American singer Miley Cyrus was featured in "Now That's What I Call Music! 49?"
Context: "Wrecking Ball" is a song recorded by American singer Miley Cyrus for her fourth studio album "Bangerz" (2013).  It was released on August 25, 2013, by RCA Records as the album's second single.  The song was written by MoZella, Stephan Moccio, Sacha Skarbek, Kiyanu Kim, Lukasz Gottwald, and Henry Russell Walter; production was helmed by the last two.  "Wrecking Ball" is a pop ballad which lyrically discusses the deterioration of a relationship. "SMS (Bangerz)" is a song by American singer Miley Cyrus featuring Britney Spears for Cyrus' fourth studio album "Bangerz" (2013).  It was written and produced by Mike Will Made It and Marz, with additional songwriting provided by Cyrus and Sean Garrett.  The track incorporates elements of hip hop styles, and is lyrically a "celebration of pop culture, beautiful women, [and] strong women".  Upon its release "SMS (Bangerz)" received generally mixed reviews from music critics; some complimented its originality, while others criticized its production and Cyrus' rapping.  The album's digital downloads helped the song chart in the United States and the United Kingdom.  Cyrus has performed the song on "MTV Unplugged" and her Bangerz Tour. "Lighter" is a song by American singer Miley Cyrus for her fifth studio album "Miley Cyrus & Her Dead Petz" (2015).  It was premiered through SoundCloud on August 30, 2015 with the parent record, and was supplemented with an accompanying music video on November 21, 2015.  The song was written by Cyrus, and was produced by Mike Will Made It and A+.  Cyrus performed the track during her Milky Milky Milk Tour in November and December.  "Lighter" is the fifteenth track on "Miley Cyrus & Her Dead Petz". Bangerz is the fourth studio album by American singer Miley Cyrus.  It was released on October 4, 2013, by RCA Records.  Opting to re-establish her music career instead of focusing on her film career as originally planned, Cyrus began planning the project in late 2012.  Work continued into 2013 when she joined RCA Records.  Described by Cyrus as "dirty south hip-hop", "Bangerz" represents a musical departure from her earlier work, which she has grown to feel "disconnected" from.  As executive producers, Cyrus and Mike Will Made It collaborated with hip hop producers including Cirkut, Pharrell Williams, and will.i.am to achieve Cyrus' desired new sound.  Their efforts resulted in a primarily pop record, with lyrical themes that revolve largely around romance.  It features guest vocals from several new partners, including pop singer Britney Spears and rappers French Montana, Future, Ludacris, and Nelly. "BB Talk" is a song by American singer Miley Cyrus for her fifth studio album "Miley Cyrus & Her Dead Petz" (2015).  It was premiered through SoundCloud on August 30, 2015 alongside the parent record.  Its lyrics discuss Cyrus' frustration with an overbearing romantic interest over primarily spoken verses.  "BB Talk" was supplemented with an accompanying music video on December 11, 2015, featuring Cyrus as an adult baby.  Cyrus performed the track during her Milky Milky Milk Tour in November and December. Now That's What I Call Music!  49, released on February 4, 2014, is the 49th edition of the "Now! " series in the United States.  The album features three "Billboard" Hot 100 number-one hits: "Timber", "Royals", and "Wrecking Ball". Miley Cyrus & Her Dead Petz is the fifth studio album by American singer Miley Cyrus, which was independently released for free online streaming on SoundCloud on August 30, 2015.  Opting for an album relying less on computerized elements than her previous release, "Bangerz" (2013), Cyrus began planning the project in 2013 before "Bangerz" was released.  Work continued into 2014 and 2015, when she befriended and began collaborating with the Flaming Lips.  In addition to the psychedelic rock band, Cyrus worked with producers Mike Will Made It and Oren Yoel (with whom she had collaborated on "Bangerz").  The album features guest vocals by Big Sean (who had appeared on "Bangerz"), Sarah Barthel of Phantogram and Ariel Pink. Younger Now is the sixth studio album by American singer Miley Cyrus.  It was released on September 29, 2017, by RCA Records.  It is her first full-length project since "Miley Cyrus & Her Dead Petz" (2015), and her first commercially released project since "Bangerz" (2013).  Cyrus began planning a commercial follow-up record to "Bangerz" while simultaneously making "Miley Cyrus & Her Dead Petz" in 2015, although later became influenced by her reconciliation with fiancé Liam Hemsworth in 2016.  "Younger Now" was written and produced by Cyrus and Oren Yoel, with whom she had collaborated on her previous two full-lengths.  Not concerning herself with radio airplay, their efforts resulted in an "honest" final product that sees Cyrus "leaning into her roots."  It features guest vocals from her godmother, country music singer Dolly Parton. "Start All Over" is a song performed by American recording artist Miley Cyrus.  It was released as the second and final single of Cyrus' debut album "Meet Miley Cyrus", the second disc of the dual album "".  A live version is available on "Hannah Montana & Miley Cyrus: Best of Both Worlds Concert" and as a karaoke in Cyrus's .  The song was originally written by Fefe Dobson, who passed the song to Cyrus, as she did not desire to include it on "Sunday Love".  The up-tempo song is lyrically about having a second chance in a romantic relationship. "Dooo It!"  is a song by American singer Miley Cyrus from her fifth studio album "Miley Cyrus & Her Dead Petz" (2015).  It was premiered on August 30, 2015, with a live performance during the 2015 MTV Video Music Awards, which Cyrus hosted, and was made available free online without prior announcement alongside the parent album.  It serves to promote the project.
Answer: Wrecking Ball