Complex sentence: Sisely Treasure was also a member of all the all-girl pop-punk, j-pop-ish group The Holograms, at which time they had a chart buster on Billboard top garage Hits "Are you ready for it".
Split into simpler sentences: Sisely Treasure was also a member of all the all girl pop-punk, j-pop-ish group The Holograms. At which time they had a chart buster on Billboard top garage Hits "Are you ready for it".