Incident took place at the Olympia theatre show earlier this week
Singer says mishap occurred after her 'pedal failed'
Singer describes it as the 'literal greatest moment of my life'
'Always Strive And Prosper' follows 2013's 'Trap Lord'
Kesha was recently denied release from her contract with Dr Luke
Polish festival takes place in Gdynia from June 29 - July 2
Video for 'Art Angels' single revealed
'Fifteen Minutes To' is probably from the pre-Halfaxa era
Artist behind the album speaks to NME as part of this week's exclusive cover feature
Musician Claire Boucher released new album 'Art Angels' last week