Complex sentence: However, the version he encountered and used is quite different to the more widely known version made popular by artists such as (who sang two Dublin versions as well as an English one), The Dubliners, Gaelic Storm and Celtic Woman.
Split into simpler sentences: However, the version he encountered and used is quite different to the more widely known version made popular by artists such as The Dubliners. It has been covered by many artists, including Frank Harte (who sang two Dublin versions as well as an English one), The Dubliners, Gaelic Storm and Celtic Woman.