In the past years, the light-front holographic Schrodinger Equation, of Brodsky and de Teramond, has played a role in hadronic physics analogous to that of the ordinary Schrodinger Equation in atomic physics. Its confining potential, uniquely fixed by the underlying conformal symmetry and a holographic mapping to anti-de Sitter spacetime, contains a universal emerging mass scale that governs confinement in the transverse plane and generate the hadron masses in the absence of quark masses. In this talk, I will show that non-zero quark masses and longitudinal confinement are correctly taken into account by the
t Hooft Equation. Thet Hooft Equation is both consistent with, and complementary to, the holographic Schrodinger Equation. Together, this pair of equations governs hadronic spectroscopy just like the ordinary Schrodinger Equation governs atomic spectroscopy.