Ceilidh bands are very much of the Celtic flavour and can be used to
describe either a Scottish or an Irish gathering. Originally these were
just impromptu meetings held in cottages where people would sing, dance,
recite poetry and tell stories - basically what we would call a bit of
a get-together. The Ceilidh is now known more as just a dance in a hall
or other suitable venue.
The usual line up for thses kind of events are accordions, guitars and
fiddles with the occasional set of drums. The music is usually of a traditional
Scottish or Irish flavour with traditional dances.