A musical experience that weaves original melodies and reinterpretations of songs with jazz and rock influences, performed in 432Hz tuning. The concert, through harmonic and natural vibrations, promotes well-being and emotional involvement. The Artistic Instincts Association presents the Merysse Acoustic Duo, with voice and acoustic guitar, in an intimate and evocative performance, perfect for historic spaces and evocative atmospheres. At the end of the performance, the audience will be involved in a sound experiment: the same song will be performed first at 432Hz and then at 440Hz (standard tuning), inviting the audience to share perceptions and emotions, making the experience even more immersive and interactive.