Kesha. Pic/AFP

Singer Kesha said she is "nervous" and "overwhelmed" ahead of her performance at the Grammy Awards. The 31-year-old singer will perform her Grammy-nominated song "Praying", which she also co-wrote amid her legal battle with producer Dr Luke, whom she has accused of rape and abuse. "When I wrote 'Praying', with Ben Abraham and Ryan Lewis, I just felt as if I had gotten a huge weight off of my shoulders," Kesha wrote on Twitter.