Sienna Spiro is a popular English singer-songwriter. As a child Spiro began developing an interest in music, writing songs inspired by old school jazz and early 2000s hip-hop artists. Eventually, Spiro would gain recognition from covers and original music she posted on her TikTok. The surge in popularity would gain her a following and Spiro would release her debut single, Need Me, in May 2024. Spiro released her second single in August that same year, and it performed well enough to peek at 75 on the Official Singles Chart.

Spiro would release two more singles that year and continued onto 2025, releasing her fifth song that January. The success from her releases would lead to her announcing her debut EP, Sink Now, Swim Later, which released in February 2025.

Spiro has over 1.5 million followers on TikTok.