Rachel Aisyah Diack (born 2003), known professionally as Ledbyher, is an English rapper, songwriter and record producer. Cited by The Guardian as a member of the United Kingdom's underground rap scene, she describes her musical style as 'bedroom drill'. Her work is characterized by a "wispy, sung-spoken" delivery and ethereal, lo-fi instrumentals. Her debut extended play (EP) CUNCH was released in 2023, before she signed to Island Records and released the mixtape The Elephant in 2026.
Diack was born in Germany, where her father was stationed with the Royal Air Force. At age three, she relocated with her mother to Medan, Indonesia, before later moving to a council house in the countryside of Norfolk. She has both Indonesian and Scottish ancestry. She began producing music at the age of fourteen, producing R&B instrumentals for her sister Anjeli. She relocated to London at the age of 19 to pursue a professional music career. She also began studying film at the University of London.
Diack cites William Wordsworth's autobiographical poem "The Prelude" as inspiration for her stagename.