Gabriele Bellu, violin (2022)
Federico Bianchetti, cello (2022)
Davide Bravo, alto (2022)
Luca Ciammarughi, music historian (2019)
Andrea Dieci, guitar (2019)
Lucio Matarazzo, guitar (2022)
Filippo Michelangeli, journalist (2021)
Christian Saggese, guitar (2019)
Camilla Squassina, violin (2022)
Marco Tamayo, guitar (2020, 2021)
Giulio Tampalini, guitar (2019, 2020, 2021, 2022)