Strange times

I have assisted at a Mass where an auxiliary bishop sang the responsorial psalm (he is now the Archbishop of Birmingham, and has a very beautiful voice—in fact, when still a priest, he sang at my ordination). In Rome in the old days, when the Pope celebrated, senior curial officials would act as the altar servers; however, I have never before seen a choir directed by a cardinal in choir dress, especially in St Peter's! It is, I assume, Cardinal Bartolucci.

h/t John Paul Sonnen here