90% is exposing the next generation, and the next, and the next. I look 30 -50 years hence and I see the few devoted middle-aged folkies going around to nursing homes and retirement communities with their tape recorders, frantically recording the last vestiges of living folk music before it dies out again. Who will be the Alan Lomax or Cecil Sharpe then? Those who will have heard Sandy and Caroline, or Art, or Alice, or any of us and liked it enough to care to preserve it!