PLAY Statement Details
 
Syntax
  PLAY commandstring
 
The commandstring is a string expression containing one or more music
commands. The PLAY statement uses a concept similar to DRAW in that it
embeds a music macro language in one statement. A set of commands, used
as part of the PLAY statement, specifies a particular action.
 
  <OCTAVE AND TONE COMMANDS>
  <DURATION AND TEMPO COMMANDS>
  <FOREGROUND/BACKGROUND OPERATION COMMANDS>
  <EXECUTE SUBSTRING COMMAND>
 
In compiled programs, you should use the VARPTR$(variable) form for
variables. For example, the BASICA statements
 
  PLAY "XA$"
  PLAY "O = I"
 
should be written for the compiler like this:
 
  PLAY "X" + VARPTR$(A$)
  PLAY "O=" + VARPTR$(I)