It’s the singer, not the song or is it? After all, it is the melody that lingers, the words that capture the undefinable. Songs are mercurial things, each having a mystery path — so far from the iPod or radio dial — that evades the fan. But next weekend, at various locations across the Island, the Martha’s Vineyard Songwriters Festival brings a dozen of the nation’s best songwriters together to celebrate songs, stories and each other.
