Mitología de las Aguas
Mitología de las Aguas, or Mythology of the waters, is a composition for flute and guitar by the Cuban composer Leo Brouwer, written in 2009 for the German-Venezuelan guitarist and composer Sef Albertz.
Brouwer defines this work as his first sonata for flute and guitar, and especially dedicated the work to Albertz, who played the world premiere in the German city of Leipzig on September 4 of that year, in the Peterskirche, as part of the closing concert of the International Festival "Con Guitarra" under the cultural patronage of the German Section of UNESCO.
The total duration of this composition, divided into four movements, is approximately 25 minutes. Although Brouwer refuses to confine it to a mere description or imitation of nature, the music of this monumental "sonata" is a kind of musical cartography Latin America, with its most emblematic landscapes, characters and cultures. "The composition is a sort of sound film about the powerful elemental force of the waters of my continent; we have the Amazon! This music are thinking about it":
I. The Birth of the Amazon River
II. The hidden lake of the Mayas
III. The Angel Falls
IV. The Güije, goblin of the rivers of Cuba
The use of scordatura on the guitar, with constant support almost "pedal" on the bass string in E flat ("S" in the German musical nomenclature) is a musical symbolism, which denotes the presence of the dedicatee (Sef) through the musical discourse. Already at the very beginning of the work, Brouwer introduces the "SEF" motif in retrograde combined with some of the most characteristic intervals of his own sound world (minor second, perfect fourth & diminished fifth):
The premiere of the work was accompanied by a visual choreography and lighting design specially conceived for the occasion by Sef Albertz and German lighting designer Jürgen Maak.
Brouwer himself was present at this concert, coinciding with the celebration of his 70th Anniversary.
"On Friday evening, the large audience was truly delighted with new music for flute and guitar,
plus video and laser projections" 
Duo ALBERTZ has performed the world premiere recording of Mitología de las aguas, which appears on the album "Con Guitarra!"
(GfzM Leipzig, 2011) 
- "Musikfestival "Con Guitarra" in Leipzig (UNESCO)".
- Hendrich, Birgit. "Meine Musik ist eine der Möglichkeiten". LVZ (Leipziger Volkszeitung: 12.
- Hendrich, Birgit. "Con Guitarra": Neuauflage im kommenden Jahr - Sechs Tage im Zeichen der Gitarre". LVZ (Leipziger Volkszeitung: 12.
- "Presentation of the CD "Con Guitarra!" including extracts of Mitología de las aguas".