Where most country songs are story-driven, Morgan Wallen’s One Thing at a Time, maybe a breakup smash, is very much a rhythm-driven record. This became the first country song by an unaccompanied male artist to top the Hot 100 since Eddie Rabbitt’s “I Love a Rainy Night” in 1981. It has held on to the top spot for 11 nonconsecutive weeks, locking in on the No. 1 spot just like Wallen and his backing musicians locked in on that killer groove. PAUL GREIN