Dusty Springfield is one of my own favourite singers too although it's not just her voice that makes a lot of her songs for me but also that particular 60s style orchestration/arrangements given to them. One of the few "blue eyed soul" artists who could pull it off.

Read her biography a couple of years ago which was interesting but she had quite a sad life really. Quite apart from issues over her ***uality she could also be riven by insecurities over her singing. Whilst perfectly capable of doing songs in one take she would sometimes insist on re-doing particular sections or phrases that she was not happy with and then they'd have to splice the different vocals together. I think Brian Wilson would do similar if I remember rightly too?