Premiered at Duomo Vecchio in Brescia, Requiem448 is a multimedia work of generative art and data sonification based on the Covid-19 data from Bergamo and Brescia, created by Nessun Dharma. It is numerically generated using the Istat database, which contains information about the Covid-19 victims in the provinces of Bergamo and Brescia. In the temporal development of the audiovisual flow, each second of the piece corresponds to a day, from January 1, 2020, to March 18, 2022, which marked the first celebration of the national day established in memory of the pandemic victims. The number of sound and visual events per second equals the number of deaths that day. The dramatic development of the work follows moments of high intensity caused by the so-called "waves" and moments of relative calm. The aesthetics of Requiem448 combine polyrhythms of idiophone timbres with data visualization. It is related to the Land Music project, a commemorative bell concert covering an area of 7,500 km2, involving the bell towers of over a thousand parishes in the 448 municipalities of the provinces of Bergamo and Brescia.