  The recent asteroseismic data from the CoRoT and Kepler missions have
provided an entirely new basis for investigating stellar properties. This has
led to a rapid development in techniques for analysing such data, although it
is probably fair to say that we are still far from having the tools required
for the full use of the potential of the observations. Here I provide a brief
overview of some of the issues related to the interpretation of asteroseismic
data.
