Complex sentence: In 1989, Demone relocated to Amsterdam and began a solo career, combining her background in punk and deathrock/gothic rock with a passion for jazz and legendary female vocalists, most notably Billie Holiday.
Split into simpler sentences: In 1989, Demone relocated to Amsterdam and began a solo career. She had an obvious background in punk and deathrock/gothic rock, but she also had a passion for jazz and legendary female vocalists, most notably Billie Holiday.