“I can always tell when you’ve been a’drinkin'” — and so, Hayshaker had me from the first line of “Laurie’s Song.” Also known as the Rider family from Waycross, GA (along with a few friends), Hayshaker makes that boozy country rock you like to listen to when you’re totally supposed to be doing something else. Their recent EP, Black Holiday in Mexico City, offers up half a dozen and one tracks reflecting a variety of musical influences while firmly anchored in the twang of C.C. and Laurie Rider. “I can always tell when you’ve found trouble, ’cause soon that trouble comes to find me.” Yep, time to get back to work.