She is known for roles in Mozart and Strauss operas, such as Konstanze, the Queen of the Night, Sophie and Zerbinetta, but also for contemporary music such as Ligeti's Le Grand Macabre.

[13] In 2017, she performed Ligeti's excerpts from the work, Mysteries of the Macabre, with the Noord Nederlands Orkest at the Lowlands Festival in the Netherlands for a crowd of 15,000.

Requested to make it provocative, she parodied Donald Trump in three costumes – as a clown, in a baby outfit with a bottle, and in a Miss America swimsuit.

[7] Hershkowitz made her debut with the Los Angeles Philharmonic in John Cage's Europeras in the 2018/19 season in a production by Yuval Sharon which was praised by The New Yorker as one of the top opera picks of 2018.

[14] Hershkowitz created the role of Claire Clairmont in Michael Wertmüller [de]'s avant-garde, serialist-fusion opera Diodati.

[4] In July 2018, she sang with the Nordwestdeutsche Philharmonie, conducted by Vincent de Kort, Lieder by Richard Strauss including "Morgen!