On February 9, 2018, KZ competed as a weekly challenger on China's Singer 2018 wherein she placed first.
She sang her own rendition of Adele's "Rolling in the Deep".
She is an alumna of University of Southeastern Philippines in Davao City and had graduated with a degree of Bachelor of Science in Biology.
Tandingan was considered as an early favorite after she performed a jazzy version of "Somewhere Over the Rainbow" in the fourth week of the Judges' auditions.
The following year, she was announced as one of the eight contestants for the second season of Your Face Sounds Familiar along with Myrtle Sarrosa, Sam Concepcion, Cacai Bautista, Kean Cipriano, Denise Laurel, Michael Pangilinan and Eric Nicolas.