Here's Angela's BBC Breakfast interview from last week, in which she reveals (around the 5 minute mark) that she was actually supposed to sing Adriana Lecouvreur at Covent Garden some time before the current production - but cancelled. Unfortunately the interviewers aren't sharp enough to probe any further, but I suspect this little snippet may account for one or other of the multiple Bohèmes or Traviatas foisted on us at short notice over the last few years. (Thanks Isabella for providing).
That's enough Angela for a while.
If you want to hear what her substitute, Ángeles Blancas Gulin, got up to check out this sound clip on GTL Torn T.