A composer.
... is called the composer.
A Librettist
Lyrisist, is a person who writes lyrics. A lyricist.
A person who writes music is called a music composer or a songwriter. A singer-songwriter is one who writes, composes and sing their own music material.Someone who solely writes lyrics may be called a lyricist, and someone who only writes music may be called a composer.
A person who writes music is often referred to as a composer or songwriter. Composers typically create instrumental pieces or orchestral works, while songwriters focus on crafting lyrics and melodies for songs. Both roles involve creativity and an understanding of musical theory, allowing them to express emotions and stories through their compositions.
score
A person who studies or writes history is called a historian.
A person who writes with their left hand is called left-handed or sinistral.
A person who writes laws is called a legislator or a lawmaker.
Testator.
The person who writes a check is called the payor. Or in the case of my brother, a sucker, when he writes another check for his girlfriend.
An author.
a publisist a bigraphy
composer
a playwright
This is a poet
A person who writes newspaper articles is called a journalist or a reporter.