Watch Megan Trainor & Ariana Grande Invade Country Music Awards [VIDEO]

It's all about that bass....Yeeeeee Haw!

Pop and Country music collided once again last night at the CMA awards show in Nashville and the mash-ups were great!

Megan Trainor joined Miranda Lambert for "It's All About That Bass" and Ariana Grande busted out "Bang Bang" with the help of Little Big Town.

Not only does Miranda Lambert look fantastic, she and Blake proved once again, that they are the Jay-Z and Beyonce of country music.