asteroFLAG is concentrating on main-sequence stars and is conducting the work within a *hare-and-hounds* framework. Sets of artificial asteroseismic data will be made by *hares* in the group, to simulate observations by different instruments (both ground and space-based). Information for constructing the artificial data comes from several sources, including full stellar evolutionary codes and analytical descriptions of the stochastic excitation and damping of the Sun-like oscillations. The artificial data are then being analyzed by other members of the group, who are the *hounds*.

AsteroFLAG is already involved in helping to prepare for the asteroseismology component of NASA’s Kepler mission. In this paper, we report on the initial results of the first phase of Exercise\#1 of the asteroFLAG hare and hounds, which is concerned with extraction of the large and small frequency spacings of the p-mode spectra, from Kepler-like observations of main-sequence stars.

Exercise\#1 of asteroFLAG hare and hounds: Observations by Kepler {#sec:HH1}
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In addition to searching for Earth-like exoplanets (via the transit method), NASA’s Kepler mission will also provide an unprecedented opportunity to study a wide range of stars by asteroseismology. The Kepler Asteroseismology Investigation (KAI) will be arranged around the Kepler Asteroseismic Science Operations Centre (KASOC), which will 