• A chord will be defined as an assembly of two or more pitches heard simultaneously, and it shall
be classified according to the number of notes it contains—two, three, four, five, six, seven, eight
notes, and so on. There shall no longer be dominant 7
th
chords, major 7
th
chords, minor 7
th
chords,
dominant 9
th
chords, major 9
th
chords, or minor 9
th
chords, since these titles and functions shall
disappear. Hierarchy disappears, and a piece of music can start and end with any chord.
• Chord progressions can be free or follow the rules in the traditional way, as long as they are done
through the modes.
• Harmonic cadences shall disappear; any chord will serve to finish a phrase or period.
• Modulations shall no longer exist, since modulating means to go from one key to another, and in
this system there is no such thing as tonality. There are modes. The passage from one mode to
another is called “transport” or “change” (Siqueira 1981, 9-10).
Siqueira presents examples of new chords (Acordes Novos) that can be formed through the stacking of
eight types of intervals: major and minor 2
nd
(M2 and m2); perfect, augmented, and diminished 4
th
(P4,
A4, d4); perfect, augmented, and diminished 5
th
(P5, A5, d5).
Though the composer did not create a system with completely new material, his Trimodal System can still
be considered innovative due to his efforts in systematizing the musical practices of traditions of the
Northeastern region of Brazil, by way of devising harmonic procedures in the modes described earlier.
3. Loanda and Maracatu in context: poetry and tradition
Siqueira credits the texts of Loanda and Maracatu to Brazilian poet Ascenso Ferreira (1895-1965) (Siqueira
1955), who became known for integrating the ideals of the Brazilian Modernist movement into poetry,
focusing on regional themes from his home state of Pernambuco (a neighboring state of Paraíba, where
Siqueira was born). During the nineteenth and beginning of the twentieth centuries, it was common for
Brazilian intellectuals and artists to highly value European culture and look down upon the Brazilian popular
cultural traditions, considering them to have no cultural importance. The Brazilian Modernist movement
sought to change that, and Ascenso Ferreira was a major Brazilian poet who brought the Northeastern
regional culture to Brazilian literature. Ferreira’s aim was to reflect the culture of the Northeastern region in
his poetry, and his aesthetics combined the Modernist rhythmic freedom in poetry writing with regional
themes (Ramos 2013, 44).
His first book of poems, Catimbó, was published in 1927, followed by Cana Caiana
(1939) and Xenhenhém (1951). In them, the author unveils aspects of Northeastern popular culture through
the combination of poetic language charged with regionalist ideas to the precepts of the Brazilian Modernist
movement (Ramos 2013, 8).
Siqueira’s settings of Loanda and Maracatu are written in the musical style of Maracatu, a cultural
manifestation that originated in the state of Pernambuco, associated with Carnival festivities. It
encompasses dance, music and a parade representing characters such as king, queen, prince, princess,
ambassadors, ministers, vassals, court people, and slaves, who dance to mainly percussive music with no
specific choreography. There are two types of maracatu: the Maracatu-Nação (also called Maracatu de
Baque Virado) and the Maracatu Rural (also known as Maracatu de Baque Solto). The Maracatu-Nação
shows African influence, having its origins in processions for African kings. The Maracatu Rural shows more