If live music has one grand, immutable law, it’s that most venues are usually only as vital as the sounders who inhabit them. In Limerick – a city we have been known to refer to as the beating heart of the island’s independent scene – it’s a sentiment you will often find spilling over in rooms like Dolans, The Commerical and Pharmacia. Without these spaces and the heroes that helm them, the sounders would know each other much less and a whole community would suffer for it. Yet for all the obvious rude health, for Jack Brolly and Caimin Walsh,…