There are plenty of songs about to make your introduction local and then build from there For Example Howden hare is it english is it irish is it Howden in yorkshire Etc Also if you are in Yorkshire there is the Yorkshire Garland web site (Trad songs)and similar in other counties then you could move into morris dancing mumming social dance. If young people tell them their play ground songs one day may be traditional (oral tradition)Old people talk about there songs there was a brilliant workshop in the Goole area that paired young people with old people and they talked about music playground songs etc it was very hard to work out who got the most enjoyment the smiling old people or the excited youngsters. Easy really !!!!!! You did say 3-4 year talk didn't you :-)