The bits that are Lindsey are in the body of the chorus to make it sound like her harmonies were in the mix.
Later she showed up and added her bits. Don't know if they kept what harmonies of her own she added to the choruses or not, but the "You can't disguise" and "tell me liiiiieees" parts are clearly her. Her pitch was lower by then from all the cigs, years touring, and drugs.
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