'The extraordinary folk-blues guitarist David Bromberg has strolled back into the spotlight as abruptly as he resigned from it nearly three decades ago when he dissolved his fantastic and popular touring band in 1980 to studyviolin making... The fluid, orchestral invention of Bromberg’s fingerpicking - his original calling card on pivotal late-1960S and 1970S sessions for Jerry Jeff Walker (''Mr. Bojangles'') and Bob Dylan (New Morning) - is inundiminished bloom, invigorating sturdy old blues an