I realize what you mean...but just so the posting is clear.
The Ave Maria is by Verdi, performed by Raina
While I unfortunately was unable to see the concert, my understanding was that Bocelli performed Mozart's "Ave Verum Corpus"
The Panis Angelicus was a recorded duet sung by Pavarotti and his father.
The music world is in extreme mourning...it has been a particularly bad year for opera...we've lost several unique and beautiful voices.