This work is written trough the idea of equal solo participations between the two instruments, until the phase in which both play together and then fuse their sound in a very impressive moment where the guitar play high pitch pizzicatos and the flute combines normal sound in soft dynamic and pizzicatos.
As the title says, the work offers an equilibrium in the guitar, the development of the musical line and its vertical, this last is represented in many different ways all along the piece by musical gestures such as: arpeggio, rasgueo, tambourin, glissandi, repeated notes and quarter tones. The melodic line is treated many different colours that mutates a simple note in a chord.
The flute is all written in quartertones, that could give an spectral colours which was only taken as an inspiration source, this musical writing in Oreka is made to give a flexibility to the melodic line of the flute and not as an spectral technique.
The Cadenza for the guitar at the end of Oreka is a synthesis of the musical elements of both instruments in the piece, developing the line and its vertical, giving equilibrium to the density between the two instruments.
Oreka offers a rich and colourful music for both instruments, which helps the musicians to concentrate in the musical sense of the work and less to the technical difficulties that the piece could represent in this beautiful dialogue between the flute and the guitar.