John Paulo Bagnas Nase was born on September 14, 1994, better known by his stage name Pablo (formerly Sejun), is a Filipino singer, songwriter, and producer. He is the leader of the Filipino boy band SB19 managed under 1Z Entertainment. Pablo’s inspirations were Filipino hip-hop artists: Loonie and Gloc-9. He also admired the styles of Bigbang’s G-Dragon, Ez Mil, Eminem, and NF.

In 2016, Pablo auditioned for ShowBT Philippines. He was the first member of SB19 to audition in the talent agency. After passing the auditions, he started training for two years and became part of NARRA trainee group.

On October 26, 2018, Pablo debuted with fellow members Josh, Stell, Justin, and Ken with “Tilaluha” written by Pablo himself.

Pablo served as the main songwriter of the band’s songs participating on all of the singles such as “Go Up” (2019) and “Alab (Burning)” (2020). Pablo was also credited as the lyricist of the boy band’s debut Get in the Zone (2020) released on July 31, 2020. SB19’s debut extended play Pagsibol (EP) released on July 22, 2021 was co-produced and written by Pablo.

On January 28, 2022, Pablo released his first solo track “La Luna” (2022) under Sony Music Philippines. The song focused about his feelings and beliefs and acceptance of shortcomings free from society’s unrealistic and unhealthy expectations.

Pablo started his career in producing outside SB19 with hip-hop group PLAN B’s R&B song “Love” released on April 13, 2022.