South African singer Daniel Koppel, better known as Danny K, has paid tribute to his late wife, Lisa Koppel, following her death. Image: Instagram @dannykj23South African singer Daniel Koppel, better known as Danny K, has paid tribute to his late wife, Lisa Koppel, following her death over the weekend. Lisa Koppel, 41, was a model before becoming a lawyer and was the daughter of prominent attorney Billy Gundelfinger. According to the singer, Lisa had privately battled colorectal cancer for the past three years. Family statement11 AUGUST 2026For the first time, the family of Lisa Koppel (41) is sharing the deeply private and courageous battle she fought with colorectal cancer for nearly three years.