On October 10, 2019, Taeyeon's agency SM Entertainment announced that her second full-length studio album would be released in the end of October.[2] The album's title is Purpose, while the lead single was announced to be "Spark", which was released simultaneously with the release of the album.[3]
"Spark" debuted at number two on the Gaon Digital Chart for the week ending November 7, 2019.[6] Within its first week of release, the single sold 47,032,838 digital index points through South Korean digital music services.[6] It peaked at number one on the Gaon Download Chart.[7] The song additionally debuted at number 25 on the BillboardWorld Digital Songs and debuted at number two on BillboardK-pop Hot 100.[8]
Personnel
Credits are adapted from the CD booklet of Purpose.[9]
^[공식]태연, 정규 2집 'Purpose' 오는 28일 대공개…타이틀 곡은 '불티' [[Official] Taeyeon, the 2nd full album 'Purpose' will be released in October 28… Title song is 'Spark']. The Chosun Ilbo (in Korean). October 21, 2019. Retrieved October 21, 2019.
^'인기가요' 태연, 1위 3관왕..갓세븐X현아♥던X빅톤 컴백·이진혁 솔로데뷔 [종합] ['Inkigayo', Taeyeon wins no. 1 for the 3rd times, GOT7 comeback, Lee Jinhyuk solo debut]. The Chosun Ilbo (in Korean). November 10, 2019. Retrieved November 10, 2019.