Is it possible to use the tone sequence generation feature of MIDP2.0 to play more than one tone simultaneously to create chords, or is the tone sequence only limited to monophonic melodies?

If the tone sequence cannot play chords, then would a possible work around be to create a midlet that can generate a MIDI file containing polyphonic data, save the file to the phone, then load the MIDI file back into the application for playback?

Thanks for any help.