Afro Celt Soundsystem, Three Daft Monkeys, Karine Polwart + more. This three-day folk festival ran for one weekend in June 1978, but that was it until last year, when the Bristol Folk festival finally returned to the city. This May it's back once again and brings with it a host of great folk artists, including the fusers of Irish and African traditions ACS showing off their ever engaging blend of beats, pipes, drums and fine sean nos singing.