Shapeshifting singer-songwriter Dreamer Boy (born Zach Taylor) returns with “Heartbreaker” out today via slowplay/Capitol Records. The high-octane love song is smeared with both the grit and glam of ‘70s rock, showcasing Dreamer Boy and his new band The Lone Stars to great effect. Penned after road trips back to the American South where he spent much of his childhood, the song also conjures up small …