Jethro Tull: Ian Anderson (vocals, acoustic guitar, mandolin, flute, whistles); Martin Barre (electric guitar, lute); John Evans, David Palmer (keyboards); Barriemore Barlow (marimba, glockenspiel, drums, bells, nakers, tabor); John Glascock (bass, background vocals). In terms of rustic, tights-wearing, elf-loving, flute-heavy, British/ Celtic folk-tinged '70s prog-rock, SONGS FROM THE WOOD is the most Tull of all Jethro Tull albums. By 1977 the band had ventured far enough from its heavy blue