Video footage from 2011 shows Kesha denying that producer drugged and raped her
Singer promises to release statement soon
'Girls' creator writes open letter about pop star's legal case with producer and label boss
Producer has been accused of rape by the singer
Bleachers hitmaker also brands Dr Luke "a creep" on Twitter
Singer has been the subject of vocal support from fellow stars in recent days
Kesha is in a legal battle with producer Dr Luke following rape allegations
Judge ruled yesterday that Kesha must continue working Sony and Dr Luke, who she has accused of rape
The singer was looking to leave her agreement after rape claim against her former mentor
Singer issues statement as New York trial prepares to open