I was lucky enough to see Agrippina with a o Miah, in Brussels. The same
production and cast also performed it at Teatre de champs Elysees. I long ago
obyaine an audio broadcast but read in another group that parts of it are
available on Youtube and have collected links for the parts with Miah Persson.
The may be some more because youtube does not always succeeds in showing wjat
you chose.

There is now a lot more with Miah on youtube.
She has a short slo about 6 minutes into this:
http://www.youtube.com/watch?v=d2dpdiRfimI
It's worth waiting for it because there are other good singers,
especially Malena Ernman

The first jalf of this is mostly Antonacci's scene.
The second haft is Miah's, with great singing and acting
http://www.youtube.com/watch?v=ty4TRmYQJkw

If it works, which it did not do at first for me,
you get Miah's part of the above immediately here
http://www.youtube.com/watch?v=stNgJ1VsTpM

This part is all Miah's
http://www.youtube.com/watch?v=zDism5Hc4Eo&feature=related

and this
http://www.youtube.com/watch?v=AZV-PsVvAFM&feature=related

In this Caludius does all the singing but you get to sea Miah change clothes and
act
http://www.youtube.com/watch?v=h6izROFBBHA

This short clip is all Miaj
http://www.youtube.com/watch?v=AZV-PsVvAFM