LOS ANGELES, CA - AUGUST 27: Post Malone performs onstage during the VMA after party hosted by Republic Records and Cadillac at TAO restaurant at the Dream Hotel on August 27, 2017 in Los Angeles, California. (Photo by Araya Diaz/Getty Images for Republic Records)

Post Malone quickly realized technique is everything if you wanna be a guitar-smashing rock star.

Watch the video below:

Post Malone Has a Hard Time Smashing a Guitar While Performing 'Rockstar' | TMZ

Post Malone quickly realized technique is everything if you wanna be a guitar-smashing rock star -- but he was still able to live up to his own song title. Eventually. SUBSCRIBE: http://po.st/TMZSubscribe About TMZ: TMZ has consistently been credited for breaking the biggest stories dominating the entertainment news landscape and changed the way the public gets their news.