He isn’t the first artist who’s risen to music stardom after singing the soundtracks for TV series he’s acted in—and he won't be the last—but Billkin is one of the most cherished. The Bangkok-born performer, aka Putthipong Assaratanakul, played a beloved character in 2019 series My Ambulance before crooning on its soundtrack. He later lent his light, crisp vocals to tunes for his shows I Told Sunset About You and I Promised You the Moon to further acclaim. His other work, meanwhile, includes poppy 2020 single “กอดในใจ” with JAYLERR and 2021’s funky, soulful “I ไม่ O (IXO)”.