Seth Ennis’ songs have the kind of titanium-strength hooks that can translate into multiple genres. They helped Dylan Scott’s surging, passion-packed “Hooked” become a major country hit, and they’ve also powered the percolating pop of Nightly’s “Hate My Favorite Band” and the hard-charging alt-rock rumble of The Band CAMINO’s “Daphne Blue”—not to mention Ennis’ own country/pop/R&B amalgams, such as “Hair Ties (I Don’t Wanna).”