Question: Who helpef write one of Charlie Puth's top three singles?
Context: Shy Carter (born August 21, 1984), is an American songwriter, record producer, and singer.  Recently, Shy has written for top acts such as Meghan Trainor, Jason Derulo, Charlie Puth, Faith Hill, Tim McGraw, and Billy Currington.  He co-wrote Charlie Puth's two-time platinum hit "One Call Away" which hit No. 1 on "Billboard"'s Adult Top 40 chart.  In 2009, he co-wrote "Someday" with Rob Thomas, which spent over 40 weeks in the Top 5 and became a No. 1 hit on "Billboard"' s Adult Top 40 chart. " Stuck Like Glue", his collaboration with Sugarland, debuted on the "Billboard" Hot 100 at No. 20 and became the 11th most downloaded country music song of all time.  He has also been featured on Latin artist Gloria Trevi's #1 song "Habla Blah Blah".  He's also worked with Faith Hill, Ashanti, and Chingy.  Carter also wrote a song titled "Bring it Back", which was released on August 7, 2015 and hit the Top 40 of "Billboard"'s Rhythmic chart. The ARIA Singles Chart ranks the best-performing singles in Australia.  Its data, published by the Australian Recording Industry Association, is based collectively on each single's weekly physical and digital sales.  In 2015, nineteen singles claimed the top spot, including Mark Ronson's "Uptown Funk", which started its peak position in 2014, and 23 acts achieved their first number-one single in Australia: Ronson, OMI, Felix Jaehn, Ellie Goulding, LunchMoney Lewis, Major Lazer, DJ Snake, MØ, Wiz Khalifa, Charlie Puth, Grace, G-Eazy, Kendrick Lamar, Conrad Sewell, Lost Frequencies, One Direction, Calvin Harris, Disciples, Justin Bieber, Eric Nally, Melle Mel, Kool Moe Dee and Grandmaster Caz. "Attention" is a song recorded by American singer/songwriter Charlie Puth.  Written and produced by Puth, with additional songwriting by Jacob Kasher, the song was released on April 21, 2017 by Atlantic Records, as the lead single from Puth's upcoming second studio album "Voice Notes".  It is a midtempo pop rock song with elements of '80s soft-soul and funk.  The song's music video was released on April 24, 2017.  The single has since attained top 10 peaks in more than 10 countries, including France, Australia, New Zealand, the United Kingdom, the Philippines, and the United States. Now That's What I Call Music!  56 is the 56th edition of the "Now! " series in the United States, released on October 30, 2015.  It features 22 tracks including three "Billboard" Hot 100 number-one hits: "See You Again" by Wiz Khalifa featuring Charlie Puth, "Can't Feel My Face" by The Weeknd and "Bad Blood" by Taylor Swift featuring Kendrick Lamar. This is a list of singles that charted in the top ten of the ARIA Charts in 2015.  In 2015 fifty-three acts, Omi, James Bay, Haim, The Avener, Jasmine Thompson, Chet Faker, LunchMoney Lewis, Jennifer Hudson, Major Lazer, DJ Snake, MØ, Jarryd James, Charlie Puth, Years & Years, Jamie Lawson, Galantis, Walk the Moon, Grace, G-Eazy, Rachel Platten, Kendrick Lamar, Deorro, Conrad Sewell, Tarrus Riley, Kygo, Ilsey, The Weeknd, Silentó, Lost Frequencies, Pia Mia, Tyga, Disciples, Fifth Harmony, Kid Ink, Selena Gomez, ASAP Rocky, Aston Merrygold, Jeremih, R. City, Eric Nally, Melle Mel, Grandmaster Caz, Felix Jaehn, Francesco Yates, Dawin, Cyrus, Zara Larsson, MNEK, Duke Dumont, Shawn Mendes, James Chatburn, Bipolar Sunshine and WSTRN reached the top ten for the first time. American singer Ciara has released six studio albums, one extended play, one DVD, one promotional single, twenty-seven singles, including seven as a featured artist, and twenty-eight music videos, including seven as a featured artist.  She made her debut in 2004 with her debut album "Goodies" which debuted at three in the US and charted within the top forty in several international markets.  The album's title track peaked at number-one in the United States for seven weeks and gave the singer the title of "The First Lady of Crunk&B," while singles "1, 2 Step" and "Oh" reached the top three in the US.  All three singles reached the top ten in many international markets, with "Goodies" topping charts in the UK.  "Goodies" was certified triple-Platinum in the United States, Platinum in Canada, and sold over five million copies worldwide.  Ciara also participated in a number of successful collaborations, including US top five hits "Lose Control" with Missy Elliott, and "Like You" with rapper Bow Wow, as well as the US top ten "So What" with group Field Mob. Paris Jones (born March 14, 1990), professionally known as PJ, is a Los Angeles-based singer-songwriter and producer from Greensboro, NC.  Jones began her career as a songwriter, and has written for Wiz Khalifa, Usher, Chris Brown, Charlie Puth & Fantasia.  She categorizes her sound as "Come Up Music", and doesn't hold herself to one specific genre. American singer Charlie Puth has released one studio album, three extended plays, one video album, three singles, and three promotional singles. Puth released two extended plays, "The Otto Tunes" (2010) and "Ego" (2013), as an independent artist.  In 2015 he signed with Atlantic Records and released his debut single "Marvin Gaye", which features guest vocals from Meghan Trainor.  The single has been certified 2× Platinum in Australia, topped the charts in New Zealand, Ireland, and the United Kingdom, and peaked at number 21 on the US "Billboard" Hot 100.  Puth wrote, co-produced, and was featured on a song with Wiz Khalifa, "See You Again", included in the "Furious 7" soundtrack.  On May 1, 2015, Puth released an EP, "Some Type of Love".  The pre-order for Puth's debut studio album "Nine Track Mind" started on August 20, 2015 along with the second single "One Call Away".  The album was officially released on January 29, 2016. "One Call Away" is a song by American singer Charlie Puth for his debut album "Nine Track Mind".  It was released on August 20, 2015 by Atlantic Records as the second single from the album, after the lead single "Marvin Gaye".  "One Call Away" is a gospel-infused pop soul song.  It reached number 12 on the "Billboard" Hot 100, making it Puth's third top 40 single in the US and his third highest-charting single as a lead artist to date, behind "We Don't Talk Anymore" and "Attention". "Gangnam Style" (Korean: 강남스타일 , ] ) is the 18th K-pop single by the South Korean musician Psy.  The song was released on July 15, 2012, as the lead single of his sixth studio album "Psy 6 (Six Rules), Part 1", and debuted at number one on South Korea's Gaon Chart.  On December 21, 2012, "Gangnam Style" became the first YouTube video to reach one billion and two billion views.  The song's music video has been viewed over 2.9 billion times on YouTube, and was the most viewed video on YouTube from November 24, 2012, when it surpassed the music video for "Baby" by Justin Bieber featuring Ludacris, to July 10, 2017, when it was surpassed by the music video for "See You Again" by Wiz Khalifa featuring Charlie Puth.
Answer: Jacob Kasher