Yeah actually! Not a ton but at least a lil of his backstory. He trained from an early age as a wood-warder in a forest (or jungle, that part of the map isn't fleshed out in game yet) relatively close to Dalmasca. He was an incredibly prodigal archer but didn't care much for being a warder, and would constantly get scolded for goofing off. Around the viera village his group defended, he would always hear a young viera a little bit older than him singing on certain nights, and he would often leave his post to go listen.

They eventually discovered he had been listening from the treeline and they eventually met and became friends. He obviously wasn't allowed in the village, but would lie in the outskirts, listening to his friend sing and giving them gifts and regailing them with stories from outside the village.

Unfortunately, an unforeseen raid on the village (or natural disaster, I don't know yet) would see his friend's tree-home catch flame while he was away. While he tried to go attend to their rescue, his wood-warder group had him tend to more immediate matters in the village at the time. They passed before he could get to them, and he deserted his village soon after.

His name, Falsetto Farin, is in reference to his favorite thing, which from what I understand is a naming convention for lone viera. 'Falsetto', for the person he first loved, and 'Farin' meaning 'gone' in Icelandic (the origin of the accent viera have in most FF lore). As an adult he's a wisecracking, jovial bard, but he always carries that weight and pain, easily visible on his face by those close to him.