6. A synthesizer as in claim 2, wherein said word generator means and said melody generator means are independent of each other.
2. A synthesizer comprising: central processor means for receiving word codes or melody program codes and for outputting signals controlling said synthesizer; decision means for deciding whether said central processor means outputs signals indicating that it has received word codes or melody program codes; memory means for storing data representing sequences of sound synthesis for each of a plurality of words and melodies which may be synthesized by said synthesizer; word generator means for providing audible indications of words in the form of synthesized sounds; and melody generator means for providing audible indications of melodies in the form of synthesized sounds, said word generator means and said melody generator means being alternately and selectively responsive to output of said decision means; means responsive to said decision means for fetching first data representing the sequence of sound synthesis of at least one word from said memory means and for providing said first data to said word generator means; and means responsive to said decision means for fetching second data representing the sequence of sound synthesis of at least one melody from said memory means and for providing said second data to said melody generator means.