Since 1994, Solas (a Gaelic word for "light") has been breathing new life into traditional Irish music. Their latest project Shamrock City is an interesting spotlight on a turn-of-the-century Montana town that was powered by Irish-American immigrants. Seamus Egan, Winifred Horan, and the rest of the band return to Studio B for a live radio ceilidh with Joe Kendrick. They play Thursday evening in Charlotte and Friday evening in Asheville.