Watch Kesha return to stage with surprise Coachella performance

The singer joined Zedd on stage for a rendition of the DJ/producer's hit 'True Colors'.

Kesha has returned to the stage with a surprise appearance at Coachella festival.

The singer, still battling to be released from her contract with Dr Luke, joined Zedd during his set to sing the DJ/producer’s song ‘True Colors’. She did not speak while on stage. Scroll down to watch fan-shot footage of the performance..

Kesha is also confirmed to perform at a tribute concert honouring Bob Dylan on his 75th birthday next month. Dylan Fest will take place at Nashville’s Ryman Auditorium on May 23 and 24 (the latter date being Dylan’s birthday).

Earlier this month (April), she failed in her legal bid to be released from her contract with former mentor Dr Luke, who she has accused of drugging and raping her a decade ago.

In October 2014, the pop star filed a lawsuit against her long-time producer Dr Luke for “mental manipulation, emotional abuse and sexual assault”, and was looking to be freed from her contract with him. Dr Luke has repeatedly denied the accusations.

A New York judge threw the singer’s case out of court this week after her record label Sony said they will not push the artist to work exclusively with Dr Luke. Iggy Azalea[/a] later shared a picture in support of Kesha on Instagram.