The court pleads the Fifth (no, not Beethoven’s) this week when conductor Chris Shepard (Artistic Director of the Worcester Chorus) crafts a masterful requiem for 1984’s “Amadeus.” *** Prosecutor: Chris Shepard. Defense: Dylan J. Schlender. Judge: The Honorable Big Ben Haslar. Jurors: Maynard Bangs, Ryan Luis Rodriguez, Big Ben Haslar. *** Advisory: Silvana Carranza. Prologue: Kirk R. Thatcher. Original Theme: WT Golden.