They are the bells of the Basilica of San Pietro that give the way to the novena and to which all the bells of the city respond.
Cardinal Matteo Zuppi wanted it so far that people feel close to the church even though they cannot physically reach it and that they do not lose hope.
The last time they all played together seems to have been in 1945 to announce the Liberation.
To play them with a very particular method of weaving threads is Andrea, the only bell ringer who can reach the bell tower following the safety directives for the coronavirus.
He like a puppeteer with his threads every night until March 19 will play to say to the population "It will be all right".