John,Chippenham Folk Festival is the last weekend in May and runs through from Friday to midnight on the Bank Holiday Monday. Plenty of traditional music and song - also ritual and social dance, storytelling, ceilidhs, parades, etc., etc (over 150 events). Chippenham (Wiltshire) is approximately 8 minutes away from Bath by train. Whilst in the area you may also have in mind to visit Stonehenge - but you may not have heard of Avebury - the largest stone circle in Europe, just 12 miles away from Chippenham. Unlike Stonehenge you can actually walk amongst, and touch, the stones at Avebury. If you are interested in this Stone Age (World Heritage) site, PM me and I will give you more specific info and get local bus times if needed. Chippenham Folk Festival has its own website, as does Wiltshire Traditions - the Folk Club which runs at nearby Devizes every Monday night (except the Bank Holiday at the end of May when the people who run it are organising Chippenham FF).