Although FeSef has a low Tc of 8K, superconductivity can be strongly enhanced by application of pressure, by molecular intercalation, and by deposition as a thin film on SrTiO3. Our goal is to investigate whether the magnetic spectrum of FeSe contains any clues to explain the superconducting behaviour of FeSe. In our recent experiment we observed magnetic fluctuations in the normal state. Our aim now is to study the low energy part of the spectrum at temperatures below Tc, to ascertain whether the magnetic fluctuations are modified by superconductivity. Specifically, we will search for the resonance-like feature found in other Fe-based superconductors.