Parody. Model unidentified. Short work of 70 compases, quite playable gains charm as it goes along Eb´s in first sections up to 36 make it seem like G tuning and mode 7 more applicable.
Free polyphony most of the way through, in cadentially defined sections [1-26] [26-36] [36-48] and then melodic motive [=theme 2] is introduced under a bass sequence of ascending 3rsd in 54-62, which is then repeated verbatim. Rare occurrence in Valderrábanos style.