Do not think about it at all.

Trust your voice--it will sing what it knows." But Diana still clung helplessly to his arm, shivering from head to foot, and Madame de Louvigny hurried across the room and joined her assurances to those of the old _maestro_.

She also added a liqueur-glass of brandy to her soothing, encouraging little speeches, but Diana refused the former with a gesture of repugnance, and seemed scarcely to hear the latter.

She was dazed by sheer nervous terror, and stood there with her hands tightly clasped together, her body rigid and taut with misery.
Baroni was nearly demented.

If she should fail to regain her nerve the whole concert would he a disastrous fiasco.