I think it's more likely that the curial cardinals have been summoned to receive a tongue-lashing on another matter entirely.
The Pope bishop of Rome appears to have been surprised that his rank discourtesy to the RAI orchestra of Turin—by failing to show up, effectively without excuse or apology, for a concert planned in his honor and scheduled after close consultation with the appropriate members of the papal household—garnered so much negative publicity in Italy. To nip further embarrassment in the bud, I suspect he's making it clear that he wants nothing to do with any music that is (1) not played on the accordion and (2) not meant to accompany dancing that is about as subtle as the pose of a hooker in the red-light district of Rome or Buenos Aires.