Board Thread:Questions and Answers/@comment-25481720-20141111011828/@comment-5334617-20141111162616

Read the built-in help, chapter 10 "Sound-Related Table", section "MML commands" - near the top of the page, it tells you that you can use "channels" with the strings " " to " ". To play C and D together, use. Note that both channels start at the same time. If you want just C for the first note, then you want D and E together, use  - the   stands for "Rest", no sound is played.