Question: What country singer who released the album "Hero", helped write the song "Craving You" by Thomas Rhett?
Context: Maren Larae Morris (born April 10, 1990) is an American country music singer, songwriter, and record producer.  She has released four studio albums.  Her 2015 extended play, "Maren Morris", charted on two "Billboard" charts.  Her major label debut album, "Hero", reached number five on the "Billboard" 200 chart and number one on the Top Country Albums chart. Thomas Rhett is the debut extended play (EP) from American country music artist Thomas Rhett.  The EP was released on August 28, 2012, and ranked No. 3 on the "Billboard" Top Heatseekers chart. "Star of the Show" is a song recorded by American country music artist Thomas Rhett.  It was released to country radio on October 3, 2016 via Valory Music Group as the fifth single from his second studio album, "Tangled Up".  Rhett wrote the song with Rhett Akins and Ben Hayslip.  The song is featured on the 2016 deluxe edition of the album. "Crash and Burn" is a song recorded by American country music artist Thomas Rhett.  It was released to digital retailers on April 7, 2015 via Valory Music Group as the lead single to Rhett's second studio album, "Tangled Up", and was released to country radio on April 27, 2015.  The song was written by Jesse Frasure and Chris Stapleton. "Something to Do with My Hands" is a song recorded by American country music artist Thomas Rhett.  It was released in February 2012 as the first single from his debut album, "It Goes Like This".  Rhett wrote the song with Lee Thomas Miller and Chris Stapleton. American singer and songwriter Thomas Rhett has released three studio albums, one extended play and thirteen singles, including one as a featured artist.  His debut album, "It Goes Like This", debuted in the top 10 of the "Billboard" 200 in 2013 and produced three number one singles on the "Billboard" Country Airplay chart.  Rhett released his second album, "Tangled Up", in 2015 which peaked at number six on the "Billboard" 200.  Four of the album's five singles reached number one, while the second single, "Die a Happy Man" became his first crossover success and highest-charting single on the "Billboard" Hot 100.  His third album, "Life Changes", is due in 2017.  Nine of Rhett's singles have received at least a Gold certification from the Recording Industry Association of America (RIAA), with six going Platinum. Thomas Rhett Akins, Jr. (born March 30, 1990), is an American singer-songwriter.  His father is the singer Rhett Akins.  Rhett has released three studio albums for Big Machine Records' Valory Music imprint: "It Goes Like This" (2013), "Tangled Up" (2015), and "Life Changes (2017)".  These albums have produced ten singles on the Hot Country and Country Airplay charts, with eight reaching the No. 1 position on the latter: "It Goes Like This", "Get Me Some of That", "Craving You","Make Me Wanna", "Crash and Burn", "Die a Happy Man", "T-Shirt", and "Star of the Show".  In addition to much of his own material, Rhett has also written singles for Jason Aldean, Lee Brice, and Florida Georgia Line. "Vacation" is a song recorded by American country music artist Thomas Rhett.  It was released on June 13, 2016 via Valory Music Group as the fourth single from his second studio album, "Tangled Up".  The song was written by Rhett, Thomas Allen, Harold Brown, Morris Dickerson, Sean Douglas, Gerry Goldstein, Leroy Jordan, Charles Miller, Lee Osker, Andreas Schuller, Howard Scott, Joe Spargur, Ricky Reed, and John Ryan.  It features a sample of War's "Low Rider", and due to this, the writers of said song are credited as co-writers. Life Changes is the third studio album from American singer Thomas Rhett.  Released on September 8, 2017 through Valory Music Group, Rhett produced the album alongside Dann Huff, Jesse Frasure, Julian Bunetta and Joe London.  It includes the chart-topping lead single "Craving You" with Maren Morris.  The album debuted at No. 1 with 123,000 units, giving Rhett his first number one album on the "Billboard" 200. "Craving You" is a song recorded by American country music artist Thomas Rhett, with backup lyrics by Maren Morris.  It was released to country radio on April 3, 2017 via Valory Music Group as the lead single from Rhett's third studio album, "Life Changes", which was released on September 8, 2017.  The song was written by Dave Barnes and Julian Bunetta.
Answer: Maren Morris