Who is Fiddler Jones from Spoon River Anthology and what is their importance?

Fiddler Jones tells the reader about a vibration that the earth keeps going in a man's heart. That's your essence, Jones says. Fiddler says he found he could fiddle and so he had to fiddle all his life. He says he had forty acres of land, but he could never turn it into any more because every time he would set to work someone or other would come by and sweep him off to some dance or picnic. Fiddler says he "ended up with forty acres . . . a broken fiddle—/ and a broken laugh, and a thousand memories,/ and not a single regret."