Barcelona is the noisiest city in the Western world; noisier than Paris, London, or New York.

According to the WHO, noise pollution is the second most harmful environmental factor for human health, as it causes stress, sleep disorders, poor performance, high blood pressure, diabetes, heart disease, and obesity, among others, and has negative effects on children's cognitive development. Exposure to certain levels of noise pollution hinders neural connections and leads to cognitive decline in children.

School is a space for socialization and learning where children spend much of their lives with the goal of developing holistically. For this development to take place, schools must ensure a healthy sound environment (calm, quiet, respectful) and at the same time promote learning situations that encourage the contemplative listening of sound and silence. Environmental noise and the constant movement of children in the classroom become disruptive elements that make it difficult for them to develop sustained and focused attention.

Music, silence, and contact with nature can help us become aware of this issue. Consciously listening to high-quality music or the sounds of nature can help us reconnect with ourselves and with our innate ability to listen, observe, and create.