From Lalena to Kurt Weill and back again

Earlier today I had the desire to play some old Donovan music. I have an lp of his. I looked up some of the tunes on Wikipedia and found that the tune Lalena was actually named for Lotte Lenya, the singer/actress famous for her role in Kurt Weill's The Three Penny Opera, among other roles. I wonder how many of you out there have heard of it or him. Once upon a time Bobby Darin had a hit with a tune from The Three Penny Opera, Mack the Knife. But then who now remembers Bobby Darin.