Every Good Boy Deserves Favour is a stage play by Tom Stoppard with music by André Previn. It was first performed in 1977. The play criticises the Soviet practice of treating political dissidence as a form of mental illness.[1] Its title derives from the popular mnemonic used by music students to remember the notes on the lines of the treble clef. The cast comprises six actors, but also a full orchestra, which not only provides music throughout the play but also forms an essential part of the action. A chamber-orchestra version also exists.
The play is dedicated to Viktor Fainberg and Vladimir Bukovsky, two Soviet dissidents expelled to the West.[2]: 359