Trivia / The Letter People

• Non-Singing Voice: Even though a number of the Letter People's voice actors were shown to be capable of singing, the show opted to use the songs from the teaching program on which it was based, for most of the Letter People's introduction songs.
  • Of particular note are Miss O's and Mister S's respective songs.
    • Miss O was, by profession, an opera singer, but her intro song used a voice that was very different from her speaking voice.
    • Mister S's voice actor, however, actually sang his intro song:
      "I am a supersonic streak in the sky!" Bah-DAH-dum-DUM, dum-DUM-dum-DUM!