evidence: Prosecutors in Illinois’ Cook County have dropped state sex-crime charges against singer R. Kelly, who has already been convicted of federal charges set to keep him in prison for decades. [...] In his federal case in New York, the disgraced R&B singer was sentenced to 30 years in prison after he was convicted in 2021 on federal racketeering and sex trafficking charges. In federal court in Chicago, Kelly was convicted of multiple child pornography charges and acquitted on others in 2022, after a trial that included anonymous testimony from a woman who said Kelly sexually abused her and recorded the interactions when she was as young as 14.