EXPLORING CONSTANT STRUCTURE IN THE REHARMONIZATION OF BRAZILIAN RHYTHMS: A FUSION OF TRADITION AND INNOVATION

This work investigates the application of reharmonization techniques in Brazilian rhythms, focusing on the theory of "constant structure," which allows chord substitution while maintaining a similar harmonic context. Inspired by jazz pianists Herbie Hancock and Bill Evans, this technique preserves the chord sequence, altering their qualities and extensions to provide harmonic continuity. The goal is to create a series of chords with the same quality, where the same scales can be used over each chord, regardless of its function. This approach causes the chords to lose their functional identity and sound more like part of a series. Reharmonizing Brazilian rhythms, such as bossa nova and samba, enriches the harmony by adding sophistication and new tonal colors. This technique requires a deep understanding of musical theory and stylistic sensitivity to maintain the authenticity of Brazilian rhythms. The practical application of this approach was investigated through musical examples and theoretical analyses. The study also considers harmonic perception, referring to comprehensive theories of harmonic structure that quantify chord functions. The research highlights the importance of understanding how listeners familiar with the musical tradition perceive harmony, suggesting that this understanding is crucial for characterizing musical perception. Additionally, the analysis of the property of tonality in Western tonal music, where the 12 pitch classes are organized around a reference pitch (tonic), provides a fundamental theoretical basis. This tonal organization is essential for musical structure and effective reharmonization. Overall, the work demonstrates how reharmonization with a constant structure can create more complex and exciting arrangements while preserving the essence of Brazilian rhythms. The research offers valuable insights for musicians and educators on the fusion of tradition and innovation in music. Keywords: Brazilian Rhythms; Reharmonization; Constant Structur.