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With the new broadband acquisitions, allowing to record frequencies down to 2.5 Hz, and the new tomographic tools, allowing to resolve for vertical velocity components up to 6 Hz, we have moved velocity model building from the situation of a “mid-frequency gap” to the situation of an overlapping area in terms of the resolution we can expect from tomography and migration-inversion approaches. Full waveform inversion-guided migration velocity analysis has been proposed to take advantage of this new situation. We show here a first real data application of this innovative approach.