Rob Sanders appears in MusicBrainz's catalog with the disambiguation "British author," from England. It's a slightly unusual entry for a music database, and worth explaining rather than glossing over.
Why an Author Shows Up in a Music Database
MusicBrainz's scope extends beyond performing musicians to include anyone credited on a recording or release — that can mean liner-note writers, lyricists working from prose or poetry, spoken-word contributors, audiobook narrators, or authors whose written work has been credited on musical releases in some capacity. A "British author" disambiguation attached to a music database entry most likely reflects exactly this kind of credited contribution, distinguishing this Rob Sanders from any other individuals sharing the same fairly common name who might appear elsewhere in the same database.
The Value of Disambiguation
Names like "Rob Sanders" are common enough that databases need a way to separate one individual from another sharing the same name. That's precisely what a disambiguation field like "British author" is for — it's less a biography than a label distinguishing this specific person's identity and role, so that credits and releases get attributed to the correct individual rather than merged incorrectly with someone else of the same name.
An Honest, Limited Record
Beyond the location (England) and the "British author" disambiguation, MusicBrainz offers no tags, aliases, or life span for this entry. Speculating about which books Sanders may have written, or which specific musical releases carry his credit, would go beyond what this record actually supports. What can be said with confidence is narrower: this is an English author whose work intersected with the music industry closely enough to earn a credited MusicBrainz entry — itself a small but genuine data point in how written work and recorded music sometimes overlap.