Written By: Big C Sienna Spiro 's voice doesn't ask for attention, instead her voice arrests it. On a stage built for spectacle, Spiro chose restraint, letting breath, strings, and conviction do the work. Her performance of Die On This Hill on The Tonight Show Starring Jimmy Fallon  unfolded like a timeless portrait featuring piano-led, string-wrapped, and emotional precision. Wearing a custom dress which nodded to late-night history, Spiro delivered the song with a poise wh