We made reference in a recent post to the many concerts, festivals and other events associated with the 9th Annual European World Of Bluegrass, held May 25, 26 and 27 2006 in Voorthuizen, The Netherlands. This festival and trade show event is the culmination of International Bluegrass Month in May, during which bluegrass associations and promoters all over Europe will present shows in their area.
We found a link that lists and describes these many events, and which we presume is updated as information changes. You can always visit the main EWOB site for details.