Kesha's sexual abuse case: Who is Dr Luke?

Singer Kesha performs during a concert at the Rock in Rio music festival in Rio de Janeiro, Brazil on Sept 29, 2011. -- PHOTO: REUTERS
Singer Kesha performs during a concert at the Rock in Rio music festival in Rio de Janeiro, Brazil on Sept 29, 2011. -- PHOTO: REUTERS

You might not know it but you could well have sung along to a hit by the prolific 41-year-old producer-songwriter Dr Luke, now thrust into the limelight as a result of pop star Kesha suing him for alleged sexual abuse. Here are five tracks he had a hand in. 

1. Kelly Clarkson’s Since U Been Gone (2004) 

2. Katy Perry’s I Kissed A Girl (2008) 

3. Britney Spears’ Circus (2008) 

4. Jessie J’s Price Tag (2011)

5. The Wanted’s Walks Like Rihanna (2013)