Complex sentence: That year, De Dannan had a surprise hit single in Ireland with the Beatles song Hey Jude, later re-released on their fourth album, "Star-Spangled Molly" in 1981; on this album, they were joined by Maura O'Connell.
Split into simpler sentences: That year, De Dannan had a surprise hit single in Ireland with the Beatles song Hey Jude. On their fourth album, "Star-Spangled Molly", released in 1981, they were joined by Maura O'Connell.