Giulio Tosti is an Italian organist, composer and performer based in Toulouse, France. His practice explores the pipe organ beyond its traditional boundaries, investigating its sonic, physical and performative possibilities through composition/improvisation, extended techniques and collective creation.

He studied in Naples, Rome and at the École Supérieure Musique et Danse Nord de France. In 2017, he was awarded First Prize ex aequo at the International Organ Competition Xavier Darasse in Toulouse.

He has performed at festivals and venues including Toulouse les Orgues, Orgelpark in Amsterdam, Vancouver New Music and Les Concerts de Saint-François in Lausanne.

Alongside his work with the traditional organ repertoire, he develops solo projects such as Nebula, an exploration of the organ as an acoustic sound machine, and Rupestre, a mobile performance investigating the relationship between body, gesture and sound.

His collaborative work spans experimental music, improvisation and live electronics, as well as projects rooted in traditional music, particularly Occitan music.

Since 2026, he has been involved as a tutor in Organ In Situ, an initiative supported by the Vrije Universiteit Amsterdam and Orgelpark, together with fellow members of the international collective Sound Rebellion.