Looking for group/song

Saw a female singer with band name. Can't remember the name of the group or the song. She had red/blonde hair and the song was a bit Kate Bush inspired. In the video she was near and in water, a lot of people around her. Not sure if they were suppose to be dead. Can someone please help me. Embla

I finally found out who she was. The song I was looking for was Rabbit heart by Florence + the machine