A very tasteful, traditional sub-genre of Kpop that typically evokes the feeling of being a free, Christian Princess in the field riding her horse. Typically linked to groups like: Lovelyz, GFRIEND, April, Fromis_9 and more recently CSR.
The phrase comes from a series of YouTube videos by "ajnvcr" or "Ajanugu" and gained recognition by the community ever since.
"What's your favorite genre of Music?"
"It has to be the Christian Horse Girl Music, nothing like old Gfriend songs."