Dust down your air banjos! Young folkies Mumford & Sons have announced a one-off show in Dublin's Phoenix Park this July and RTÉ Ten is giving you a chance to win tickets before they go on sale this Friday morning.

Mumfords are the first headline act confirmed to play the Phoenix and they hit its great wide open spaces on Sunday July 14th.

Support on the day comes from recent Brit award-winner Ben Howard, London retro rockers The Vaccines, and Edward Sharpe & The Magnetic Zeros.

Tickets are €61.50 from Ticketmaster and go on sale this Friday (March 15th) at 9am.

But you can avoid the madding crowds and be in with a chance to win tickets here on RTÉ Ten. We've teamed up with promoters MCD and have a set of double tickets to give way.

Simply send the answer to this question to entertainmentonline@rte.ie to be in with a chance of winning:

What is the title of Mumford & Sons' second album?

E mails must have Mumfords in the subject line and include a contact number.

Competition closes on March 22 at midnight.