Ground-based observations of O and B stars
  Ground-based observations are a strong tool for asteroseismic studies and even in the era of asteroseismic space missions they continue to play an important role. I will report on the activities of the CoRoT/SWG Ground-Based Observations Working Group, discuss the observational efforts of the Open Cluster campaigns and the search for the origin of extra line-broadening in massive OB stars 
Katrien Uytterhoeven