At the time of the festival's inauguration, Celtic music was quite popular, with Alan Stivell, Dan Ar Braz, Glenmor and Gilles Servat being big names in the field.
Quickly, its success had put pressure on the organisers to hold local heats all over Brittany before the final (1975).
The Kan ar Bobl festival marks an important date in the Breton cultural diary as it boasts a meet-up of hundreds of musicians and singers in the region who play an active part in the conservation of Brittany's rich musical heritage.
Many bands have been formed after meeting there, including Storvan, Denez Prigent, Yann-Fañch Kemener and Ar Re Yaouank.
The Kan ar Bobl's aim is to conserve and transmit musical patrimony throughout different areas of Brittany, but also to inspire new original forms.