paɪənˈɪɹɪŋ ðɪs tɛknˈiːk wʌz wˈʌntˈaɪm vˈɪntən ˈænɪmˌeɪɾɚ dʒˈoʊn ɡɹˈæts, fˈɜːst ɪn hɜːɹ ˈɑːskɚnˈɑːmᵻnˌeɪɾᵻd fˈɪlm ðə kɹiːˈeɪʃən nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi ænd ðˈɛn ɪn hɜːɹ ˈɑːskɚwˈɪnɪŋ mˈoʊnə lˈiːsə dᵻsˈɛndɪŋ ɐ stˈɛɹkeɪs fˈɪlmd ɪn nˈaɪntiːnhˈʌndɹɪd nˈaɪnti tˈuː.
Pioneering this technique was one-time Vinton animator Joan Gratz, first in her Oscar-nominated film The Creation (1980) and then in her Oscar-winning Mona Lisa Descending a Staircase filmed in 1992.