"A Body Swayed By Music," from Challenge #37, is a kind of upper-medium trust adventure, unremarkable in those terms.
But it's worth noting because it's an uncommon example of a stop-the-ritual scenario that doesn't rely on magic or Cthulhu stuff, nor on the "ritual" being something like an execution or building demolition. It's a proper stop-the-ritual adventure for Traveller.
That's just kind of neat. 馃槉