I am working my way through Asturias (Leyenda) in E minor for classical guitar. I believe the arrangement is based on the one by Segovia. I am using this sheet music, and comparing it to the tablature here when I get confused.
At the start of the 25th measure comes a B major chord (from my understanding borrowed from the parallel major key).
The issue I am having though is that it is notated above the staff as BVII6. What is that supposed to mean? My first guess would have been a major chord with a base note of the flattened 7th scale degree, but that is clearly not the case. I am a little confused.