Flamenco

In Germaine Montero's Spanish albums, flamenco guitar appears only behind her declamations of poetry, never behind her singing of songs. Her accompaniment is always a small chamber orchestra. In the Spanish folksong albums, there are separate guitar tracks with no singing or reciting at all.  

Why?  

The songs she sings are not flamenco, and she is not a flamenco singer. But it seems that we must have flamenco on a Spanish album, so the solution is to put it separately.  

You can recite poetry with a flamenco background. That is like reciting "beat" poetry to jazz. The music functions as a marker of cultural ambience. It is not really a setting of Lorca to music.