Matt Bellamy teased a new Muse song during a recent Instagram Live, playing a snippet of the track for fans in his car.The British rock trio released their latest album ‘Simulation Theory’ in 2018, with the frontman confirming work had begun on its follow-up last year.Bellamy went live on the social media site over the Christmas weekend, playing a 60-second excerpt of a song that fans are referring to as ‘Won’t Stand Down’ while his son headbanged in the seat next to him.“Won’t stand down, I’m