Opening with "Pluto, " an ode to the "overthrown" planet (and closing with "Pluton, " a French re-imagining of the song), the record makes its cheekiness immediately apparent.
For example, there were very few women painters at the time, and many of the self-portraits have more humour or cheekiness than was often displayed in works of the period.
I'd seen it happen a half-dozen times without incident in the past, but that night the audience let out a huge whoop of delight at the sheer cheekiness of Balanchine's choreography.