When the new Wembley Stadium finally opens this year, it will be wired for sound by an Oxford man and his team of engineers.

High above the incomplete stadium, Mark Kelly had to work out the best places to hang 1,500lb speakers that will pump out the sounds of rock band Muse, when they become the first group to play the stadium this summer.

And when - hopefully - the FA Cup Final is held there in May, it will be speakers put in place by Mr Kelly, the director of company Beat Audio, that will let people know the scorers and any substitutions.

Beat Audio was given the contract to oversee the installation of the state-of-the-art public address system, as well as put in place a sound system suitable for pop and rock music.

Mr Kelly, from Kidlington, has had an association with Wembley going back 20 years - he worked on concerts featuring Pink Floyd, Madonna, Michael Jackson, and the Nelson Mandela tribute show.

Mr Kelly said: "I was contracted by Live Business International - which specialises in the design, installation and maintenance of sound, lighting and audio-visual systems - who contacted me around Christmas 2005 and asked me if I would be involved in the project.

"It is fantastic to be associated with a truly world-class stadium and awesome sound system.

"My history with Wembley goes back a long way. When I was studying electronics in London I used to work at the stadium every summer during my holidays, setting up the PA."

Beat Audio - British Electro-Acoustic Technicians Audio - is a local sound consulting and audio hire company - set up in 1991, and based at Oxford Brookes University for the past eight years. It provides sound services to county and city councils, as well as a number of Oxford venues, including The Zodiac, Coven and Po Na Na.

During the contract, Mr Kelly, from Kidlington, was working 14-hour days to get the Wembley contract finished on time, and had a team of around 20 people working alongside him.

He said: "Working the long hours in London began to take over my life. I have a wife Sarah and two children - Zoe, 13, and Ben, nine - who attend Gosford Hill School, in Kidlington.

"I love working in Oxfordshire, so my family can come along and join in the fun. We support a lot of shows at Oxford Brookes, as well as several further afield in Aylesbury and Reading.

"I particularly enjoy the Truck Festival in Steventon, as my family get to come along and we get to camp out."

He added: "My job is very interesting and it's a pleasure to work in Oxford, which is a great musical city."