- References say that his British debut was at the Edinburgh Festival. I think that refers to the Edinburgh International Festival, so this is what I wrote.
- Some sources report that he was born in the city of Granze instead of Este, as I have indicated. I chose the latter because this is what the Grove says but some clarification is needed.
- Some sources report that he has won the Grammy but a search in the Grammy web site list him only among the nominations.
