Double fantasy
The divas take a moment to relax on an earlier stop of their tour.You know, some days I feel so lucky to be able to do this. And one such day was last Sunday, when I was privileged to hear Renée Fleming and Susan Graham (above) warble to each other - and to a packed Symphony Hall - in a sold-out Celebrity Series concert.For this proved a vocal match truly made in heaven - or at any rate close by. Superst…