I'd be liable to think that the 1984 Scrabble theme, composed by the late Ray Ellis (and his son, Marc), was produced entirely on synthesizers, including the string section, the horn section, and the "guitar" solos you hear at the 0:54 and 1:58 marks. The drums sound like a drum machine (think LinnDrum or Oberheim DMX).
A tough question comes up: what exactly did the father and son duo use to write this iconic theme?
Being that this show was first produced and aired in 1984, the keyboards then in demand were:
1. Yamaha DX7
2. Roland Jupiter-8
3. Roland JX3P or JX8P
4. New England Digital Synclavier
5. Fairlight CMI
6. Oberheim OB-Xa
7. Sequential Circuits Prophet-5
8. Moog The Source
Less common keyboards that were still in use then included the Moog Modular 15, the more compact MiniMoog, and the Fender-Rhodes and Wurlitzer electric pianos.
If anyone else could assist me on this, please respond.
Thank you,
Ben