The Wombats are set to play Radio 1's Big Weekend
The Wombats have said the band's second album is a departure from their recent sound with a "heavier" direction.
Murph told Newsbeat the boys had been working late in the studio and already had about 10 new songs for their next record.
He said: "It's really exciting, it definitely sounds a bit different. It's a lot more synth-ier, and parts are a lot heavier."
Their 2007 debut A Guide To Love Loss & Desperation reached 11 in the UK chart.
Since then Murph says his lyrics have also moved on, thanks to changes in his personal life.
"There's no songs about dancing or getting slapped at a disco which is definitely a progression in my own personal lyric writing," he said.
"I can't really moan about my women troubles, or lack of, any more so I guess it's more about growing up, what life is like now, the world around.
"I've drawn inspiration from every other possible source apart from being slapped at a disco."
The trio are set to play Radio 1's Big Weekend on 9 May and are hoping to get the crowd going with some of their classics.
Murph said: "At the moment we're demo-ing new stuff. I don't know how far we're ready to unleash that to the public.
"The main plan is to just stick to the hits - in inverted commas - and give the crowd a reason to go wild and dance like maniacs."
And it looks like the plan is to stay a bit more low-key this year, with fewer festivals in the pipeline.
"We're not doing the full mammoth festival run like we did last year. We're trying to just do bits and bobs," said Murph.
"We don't want to be too much in everyone's face. So certain festivals we'll be trying out new stuff but we're not going to play eight new songs and two old ones.
"People want to hear what they want to hear. It's nice to add a couple of songs in just to keep ears pricked up."