The Story of ABBA: Melancholy UndercoverAuthor: Jan Gradvall Through exclusive interviews and over a decade of deep research, renowned music journalist Jan Gradvall explores the secrets to ABBAs success. There has never been a group like ABBA. More than half a century after their songs were recorded, ABBA still make people the world over dance and sing their hearts out. In 2013, when the band had not been interviewed for over thirty years, Jan Gradvall was granted unique access to them for