Post Malone just released his country album F-1 Trillion. Earlier the year, the hitmaker covered Dwight Yoakam at Stagecoach, then in July he joined the country singer-songwriter onstage in LA. Now, Post Malone and Yoakam are sharing their collaboration, which is Yoakam's first new song in nine years.

"I Don't Know How To Say Goodbye (Bang Bang Boom Boom)" is from Yoakam's forthcoming album Brighter Days. Last month, F-1 Trillion debuted atop the Billboard 200, and Post Malone became the first artist in history to score #1s on the Top Country Albums, Top Rap Albums, and Top Rock & Alternative Albums charts. This week Billboard also named "I Had Some Help" as Song Of The Summer based on chart metrics.

Check out "I Don't Know How To Say Goodbye (Bang Bang Boom Boom)" below.