Holly Bud was killed on his way to Canterlot to appear for trial when the chariot that carried him crashed during a freak storm out of the Everfree forest. His companions and fellow musicians, Strong Riches and Big Bopper, were also killed. Post mortem autopsies revealed that Strong Riches was a changeling, though whether he was Yellow Streak or somepony else completely has not been proven.
Holly Bud was posthumously cleared of all charges for his role in the changeling invasion of Canterlot, and a tableau depicting all his known aliases has been commissioned in his honour at the Trottingham School of Arts. The plaque at its base will read 'love is in the music'.
The story of Holly Bud has been recorded into the Annals of Friendship by Princess Twilight Sparkle as an example of how it is possible to find common ground with even the most unlikely of ponies, and how even an enemy might someday become a friend.
The identity of Yellow Streak has not yet to been confirmed. There has been much speculation as to who he might be or have been after Holly Bud left The Bugs. Princess Celestia herself has offered a general amnesty should he ever step forward to reveal himself.
No official contact with the changeling hives has been made since the Canterlot invasion.