Publishing splits explained

The two halves of composition copyright

When you write and release a song, you aren't just creating a sound recording—you are creating two distinct pieces of intellectual property. The first is the master recording, which is the specific audio file of the song. The second is the composition, which includes the underlying melody, chords, and lyrics. Music publishing is the business of managing and monetizing the composition. If you write your own songs, understanding how publishing splits work is the difference between leaving money on the table and building a sustainable career.

The foundational rule of music publishing is the split between the Writer's Share and the Publisher's Share. Every composition is automatically divided into these two equal halves: 50% belongs to the songwriter (the creator of the music or lyrics), and 50% belongs to the publisher (the entity that administers the song, licenses it, and collects royalties). If you are an indie songwriter without a publishing deal, you are both the writer and the publisher. This means you own 100% of the composition (both 50% shares) and must register and collect both halves yourself.

Performance vs. Mechanical royalties

Composition royalties primarily flow from two main sources: performance royalties and mechanical royalties. They are collected by different agencies and triggered by different uses of your music, making it essential to understand how they differ.

• Performance Royalties. These are generated whenever your music is played in public. This includes radio broadcasts, television shows, background music in restaurants and retail stores, live venue performances, and interactive streams on platforms like Spotify or Apple Music. These royalties are collected by Performance Rights Organizations (PROs) such as ASCAP, BMI, or SESAC in the United States, and PRS in the United Kingdom.
• Mechanical Royalties. These are generated when your music is physically or digitally reproduced. Historically, this meant physical sales of CDs or vinyl. Today, it also includes digital downloads and, most importantly, interactive streams on DSPs. Every time someone clicks play on Spotify, a mechanical royalty is owed because the platform is technically reproducing the song file. In the United States, these are collected and paid out by the Mechanical Licensing Collective (MLC).

Songwriter splits and co-writes

When you co-write a song with other musicians, you must agree on how to split the ownership of the composition. This is where split sheets come in. A split sheet is a simple agreement that lists the songwriters, their respective percentages of the song, and their PRO affiliation.

There is no industry-standard formula for splits; some bands divide everything equally, while others split based on who wrote the lyrics versus the melody. The most important rule of co-writing is to agree on and sign a split sheet before the song is released. Trying to negotiate splits months later—especially if the song starts gaining traction—is a recipe for legal disputes and frozen royalties.

Why registering with a PRO and MLC is non-negotiable

Many indie artists make the mistake of assuming their distributor (like DistroKid or TuneCore) collects their publishing royalties. They do not. Distributors collect master royalties—the money generated by the specific sound recording. They do not collect composition royalties.

If you only distribute your music and do not register with a PRO and a mechanical collection agency (like the MLC), your publishing royalties will sit in unclaimed “black box” pools. Eventually, under industry rules, these unclaimed royalties are distributed to the major publishers based on market share. Registering your compositions is the only way to ensure your hard-earned royalties find their way back to you.