Country music artists sometimes forget their own lyrics while performing live, including Keith Urban. Urban shared his strategy for handling forgotten lyrics on the Jennifer Hudson Show, where he pretends his microphone is malfunctioning to cover up the mistake. By shaking the microphone cord and acting like he is fixing it, Urban smoothly transitions to the next verse without the audience noticing. However, he revealed that his act was so convincing that his roadie once ran out to replace the microphone mid-song. Despite the occasional slip-up, Urban's quick thinking and professionalism allow him to navigate forgotten lyrics seamlessly during his performances.
Source: https://tasteofcountry.com/keith-urban-forgets-lyrics/