As Irish music-making monikers go, Final Boss of My Twenties is right up there with the most inspired. The sonic sobriquet (yes, we went there) of twenty-eight year old Dubliner Simon Maguire, the turn of phrase has very recently come to our attention off the back of Murphy latest single, ‘Let Go’. Featuring a rather impressive, Lego-based video – the product of “weeks of moving these little guys millimetres at a time”) – the single is a pretty contemplative affair, and what Maguire calls the “culmination of an ounce of action and a ton of theory; now the seed’s finally in the soil, I’d…