Tom Watson has recommended Labour leader Ed Miliband listen to the band Drenge in his parting comments of his resignation letter.
In his letter, he told the Labour leader: "John Humphrys asked me why you were not at Glastonbury this weekend. I said Labour leaders can’t be seen standing in muddy fields listening to bands. And then I thought how terribly sad that this is true.
"So: be that great Labour leader that you can be, but try to have a real life too. And if you want to see an awesome band, I recommend Drenge."
Labour leader Ed Miliband has turned on the trade union Unite - his biggest financial backer - whose votes helped him become leader.
Tom Watson has announced his resignation from the shadow cabinet, amid a row about the influence of the union Unite on the Labour party.