SEVENTEEN reveals official track samplers for ‘SPILL THE FEELS’

On September 10, 2015, Seventeen released their second EP Boys Be, which later became the highest-selling rookie album of the year.[23] The EP's success earned the group awards at the Golden Disk Awards, Seoul Music Awards, and Gaon Chart K-Pop Awards.[24] Seventeen became the only K-pop group on Billboard's "21 Under 21 2015: Music's Hottest Young Stars" list.[25][26] Seventeen held a four-show concert series in Seoul titled 2015 Like Seventeen - Boys Wish from December 24 to 26 as a year-end celebration.[27] After the concerts' success, Seventeen held two more in the following February in 2016, the Like Seventeen - Boys Wish Encore Concert.[28]
Seventeen's first studio album Love & Letter was released on April 25, 2016. In addition to success on domestic charts, the album charted on the Oricon Weekly Pop Album Chart in Japan.[29][30] Seventeen received their first win on a domestic music show with the album's lead single "Pretty U".[31] Love & Letter was later re-released on July 4 with lead single "Very Nice".[32][33] Promotions were immediately followed by Seventeen's 1st Asia Tour 2016 Shining Diamonds, which included venues in South Korea, Japan, Singapore, Indonesia, Australia, and China.[34][35] On December 5, the group released their third EP, Going Seventeen with lead single "Boom Boom" (붐붐).[36][37