tour de force

Despite a later reputation for mangling his words, Prescott's performance in the conference hall was an impassioned tour de force.

This in itself was a technical tour de force, but the job was only half done.

This tour de force contains an hour’s worth of haunting, intertwining phrases that feel like a combination of Requiem and Kaddish.

Having watched the entire Democratic National Convention Tuesday night, I was struck by how it was it was a masterful tour de force display of diversity and American democracy at its best.

Judges hailed it a "transport tour de force", adding that it is "a major infrastructure project that sets a new standard for inner-city transport".