A split sheet is a simple agreement completed by co‑writers immediately after a songwriting session. It records the exact ownership percentages of the composition, the writers’ legal names, PRO affiliations, contact details, and the song’s working title and date. This document serves as authoritative proof of each contributor’s share when the work is registered with PROs, music publishers, or distributors, ensuring that royalties flow correctly and preventing later disputes. Because publishing splits cannot easily be changed once a song is commercially released, an accurate, signed split sheet is a vital safeguard for every collaborator.