Mackenzie Hartz has 11 Taylor Swift concerts.

Originally from West Reading, Pennsylvania, Taylor Swift (born December 13, 1989) is a 1989-12-13 year old musician, well-known for her narrative songwriting style and ability to elevate traditional pop-country sounds to new dimensions. After moving to Nashville at just 14 years old, she was signed by Big Machine Records which released her debut studio album in 2006. It became the first debut album written by a female country singer to go platinum in the US. Her next album "Fearless" was the first of twelve albums to consecutively peak at number one on the Billboard 200 chart. In 2018, her entire catalog was sold to a private investor. To regain control over her music, she re-released Fearless as "Fearless Taylor's Version" and her fourth album "Red" as "Red (Taylor's Version)" in 2021. Some of Swift's most popular songs include "All Too Well," "Cardigan," "Lover," "You Belong with Me," "Evermore" (featuring Bon Iver), "Love Story," "Shake It Off," "Ronan," and "Blank Space," among many others.