Warner Music Group has appointed Michael Nash to act as an advisor to CEO Stephen Cooper, a day after announcing that COO Rob Wiesenthal was leaving the company.

Wiesenthal left to focus on his aviation start-up called Blade, described as "Uber for helicopters".

Nash actually worked at the label from 2000-2011, and will now head up business development in Wiesenthal's absence. He starts his new role next week and Cooper, writing to staff yesterday, said: "I’m sure you will all give ...