Lead sheet
A basic musical notation document showing the melody, lyrics, and chord changes of a song — the minimum required to document and register a musical composition for copyright purposes. Lead sheets are commonly filed with copyright offices and PROs.
Articles about Lead sheet

The Complete Guide to Song Structure and Parts
Song Structure and Parts determine how musical ideas communicate with listeners and how those sections are documented and monetized. This guide maps every common part to its musical function, typical timing, and real-song examples, then translates those elements into actionable metadata , registration steps, and publishing practices you can use to protect and collect royalties.

Mastering the Art of Music Composition: Tools and Techniques for Notation Software
Music composition is the creative process of piecing together musical elements to form a cohesive piece of music. It involves a combination of music theory, notation, and innovative thinking to produce a composition that resonates with the audience.