Taylor Swift fans are concerned for her health as she continues her massive world tour. During the pop icon’s Monday, March 4, concert in Singapore, Swift, 34, seemed to cough and have a raspy voice while singing her smash hit “Delicate” to the crowd. In a clip shared to TikTok, the chart-topper could be heard clearing her throat as she sang her signature tune from her 2017 album “Reputation.” “Hope she’s ok fr [for real],” one person said in the comments section below the video. “You can hear a raspy tone in her voice, she also seems more calm and reserved in her movements. The show must go o…