Winter is definitely, definitely, definitely starting to sink its teeth into Galway’s spine on this particular Thursday night. What an absolute joy it is then to shiver into the Roisín Dubh’s candlelit main room; to take a seat and allow the three acts of tonight’s Strange Brew showcase to wrap the modest but attentive audience in music that is so reassuringly warm. First up is the local Grounds For Invasion (below). The duo of multi-instrumentalist Willow Sea and vocalist Tracy Friel are visibly comfortable playing on this stage by now and this contributes nicely to the intimate, comfortable atmosphere that…