Ho Hum. Celtic is a useful group term and certainly includes Breton, Cape Breton, etc. etc. Should a group that plays Scots, Irish, Breton, Galician, etc. change its name when it switches from one to the other? I agree with guest Al. Bert is right about the pronunciation, Seltic was preferred in the OED and Webster's with Keltic in second place. Outside of musical circles, it is still seltic to most people in the United States but Webster's now places Keltic first (haven't seen the latest OED). What, me worry?