A sad, grief and sorrow guitar solo music by a Spanish composer, Fransisco Tarrega. (1852-1909).
It is usually perform with the next Prelude (Oremus).

From Wikipedia; "The endecha is a subgenre of lament, planto, found in early Iberian music. It usually indicates a metrical composition of 4 verses with 6 or 7 syllables.The endecha is essentially a musical form; a hexasyllable."
The photo was taken from deviantart.com by Profixia
Music Video with remastered audio: https://youtu.be/LQW2AwivNyo

Tarrega - Prelude No. 37 (Endecha)

Welcome to the Classical Guitar Station! It is featuring the guitar music from the Classical Guitarist, Joseph Lau who like to share the beautiful and soft guitar music here.
The music have been recorded in late night after a few glass of beer or wine at his home. 
The beautiful and mellow tone of the #Guitar is great for the music in night or #Chilling, #Relaxation and #Meditation.
You may start with the playlists if you have no idea where to start, Enjoy!

Tarrega - Prelude No. 37 (Endecha)

Viva Guitar!