Celtic Music
Wikipedia article explores the difficulty in defining a genre which includes the traditional musics of the Celtic peoples, and recorded popular music with only a superficial resemblance to folk styles.

Celtic Music - New Zealand
A resource for Celtic (Irish & Scots) musicians and performers. Information about events and sessions, teachers, and a tune collection.

Celtic Roots
BBC Scotland site covering Celtic, traditional and folk music from Scotland and beyond. Includes gig listings, reviews and programme information.

CelticTV
Celtic website which includes live webcasts, audio, restaurant and pub guide and band links from around the world.

CelticWonder
Glorifying Irish music in its entirety with RealAudio clips from Clannad, Anuna, Riverdance, Loreena McKennitt and others, as well as graphics, MIDI files, and a discussion board.

Ceolas Celtic Music Archive
The home of celtic music on the net, with reviews, biographies, guides, audio samples, hundreds of links to real-world and internet resources, tunes, schedules, and instrument guides.

soc.culture.scottish: Newsgroup FAQ
220+ pages, 485+K information. Updated daily. The most popular site on the internet for Scottish cultural information: history, arts, language, food, news, tartans, festivals, politics, education, sport; Links.

The Irish Music Forum
A bulletin board site dedicated to Irish Music.

Traditional Celtic Music
Resource for San Francisco and Monterey Bay area Celtic music. Includes information on the traditional Celtic music of Ireland, Scotland, Cape Breton and Brittany, with event calendar, local resources, CD reviews, suggested first purchases, and musician links.