Greg Dulli of Afghan Whigs/Twilight Singers/Gutter Twins fame just released a fantastic album, Live At Triple Door, which includes a phenomenal cover of George Harrison's "Isn't It A Pity?" with a coda of Donovan's "Atlantis." After listening to that track (about five times in a row), I sought out the original Donovan tune on YouTube. Lo and behold, here is Donovan doing "Atlantis" backed up by the Smothers Brothers, Peter, Paul, & Mary, Jennifer Warnes, and Mort Sahl. This version, too, is amazing.