  This talk explores the spin--1 correlators up to O(alpha_s) through a large
NC resonance theory. The phenomenological analyses of this kind must take these
corrections into account since they produce a larger impact than the first OPE
condensates. It is also necessary to separate low and high energy regimes;
fixing the parameters of the lightest multiplets through perturbative QCD
arguments is unfair and introduces errors in the determination of the
condensates and resonance parameters. This separation of regimes improves our
understanding of the Minimal Hadronical Approximation. The study at O(alpha_s)
already allows discerning between different hadronical models, where the
Regge-like mass spectrum shows the best agreement to phenomenology.
