“The reborn, newly healthy Upshaw has reinvented herself as a performer who is also a co-creator. She works with composers such as Golijov and Kaija Saariaho, whose oratorio about Resistance martyr Simone Weil, La Passion de Simone, she sang at the Barbican last summer, and extends commissions to a new generation of musicians like David Bruce, a young Englishman whose chamber opera will be performed this month by the students Upshaw coaches.”