There are at least 2 Ghostwriter up here. One brings you epic trailer music and the other post-punk or hardcore or something like that.
1.Ghostwriter is an independent music library with locations in Los Angeles, CA and Nashville, TN that offers epic trailer music.
With a staff of in-house custom composers as well as a network of trusted out of house composers, they create original music under the Ghostwriter and Astral labels for all forms of advertising. Their music has been placed in some of the most anticipated film campaigns, advertisements, video games, and TV promos.

2.Ghostwriter could be the post-punk version of a Harry Smith-era self-accompanied singer-songwriter... For over a decade, Ghostwriter has been on the road in true troubadour form: one man traveling, making music that is direct and uncompromised. Ghostwriter has shared the stage with icons like Nick Cave and the Bad Seeds, T-Model Ford, The Real Kids, and released six albums on End of the West records. Known for stark Americana and an unrelenting DIY ethos, on his last album Prayin' all the time (2012), Ghostwriter brings fire and brimstone deep into the Oregon backwoods. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.