'I needed a challenge': Sir Elton John teams up with Brandi Carlile for new joint album

This is Unscripted - a podcast brought to you by ITV News Arts Editor Nina Nannar.

In each episode, Nina speaks to a leading name from the world of arts and entertainment with her guests talking about their life and work.

This week, Nina talks with musicians Sir Elton John and Brandi Carlile about the process behind his most challenging album yet.