The Muse frontman`s fiancee Kate Hudson gave birth to their son Bingham in July 2011 and the rocker decided to record the tot`s heart rhythm for the track `Follow Me` on upcoming LP `The 2nd Law` as a tribute to him. He said: "The beginning of `Follow Me` has my baby`s heartbeat on it." Matt - who famously stockpiled food as he feared the world would end in 2009 after researching conspiracy theories when writing album `The Resistance` - also admitted becoming a father has made him worry even more about the future. In an interview with NME magazine, he said: "Becoming a father has made my songwriting a bit more focused. I don`t think it`s affected my concerns and fears and anxieties. If anything, the concerns for the future are amplified." Another track on `The 2nd Law`, `Madness`, is inspired by Matt fighting with Kate and having to go to her mother Goldie Hawn`s house to apologise. He explained: "It`s like you`ve had a fight with your girlfriend and she goes off to her mum`s house for the day and you`re on your own going, `What did I say?` "I`m sure a lot of blokes have that experience in the early stages of relationships where you go, `Yeah, she`s right isn`t she?` " Matt`s bandmates also admitted the singer hates the attention that comes with being in a high-profile relationship and they are surprised he hasn`t yet lashed out at photographers. Dom Howard said: "I`m surprised he hasn`t smashed someone`s camera with a golf club yet. He did start carrying a golf club at one point. I`m surprised it didn`t make him crack and do something that was going to end up putting him in court."