This second edition is not only revised but also greatly expanded, and has much new information, including material never before printed and unavailable elsewhere. In 1,750 individual articles and as many more sub-sections The Companion gives A-Z coverage of song, dance, instruments, bands, storytelling, technology, tunes and style, composition, organisations and promotion, education and transmission, collectors and archives, revival, broadcasting and recording, English, Scottish and Welsh music and song, and music in all Irish counties, Europe and the USA. This commentary and analysis is linked to an historical timeline which spans three millennia, and a publications listing that covers three centuries. Six hundred biographies detail the human endeavour of the field, documenting significant musicians, commentators, historians, promoters and composers, and extended entries cover major themes such as song, dance, education and the elements of style.