Maren Morris has helped push country music into the 21st century. Her music is grounded in country -- prior to striking gold as a performer, she was a professional songwriter in Nashville -- but she also incorporates elements of pop, R&B, hip-hop, and rock, creating a distinctive, stylish hybrid that has wide appeal outside her chosen genre. This versatility was evident on her hit singles "80s Mercedes" and "Rich," while her ability to cross over was showcased in "The Middle," a 2018 dance-pop smash she recorded with Zedd and Grey. Even as she broke into the pop Top Ten with 2...