Hello Clyde,

Your two wishes have already been fulfilled.

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(a) In the midi setup, for each device include a latency factor so where you have several different devices being driven by Composer, it is possible to line them all up.<!-/quote-!><hr size=0></blockquote>MidiNotate has already supported this for many years. In the Setup / MIDI Device Configuration, select the output device, and set the Anticipate Delay (in milliseconds) property. If you assign different tracks to different devices with different delays, Composer will correctly synchronize the delays of the tracks during playback.

There's one important catch though: If any device has a delay, you won't be able to record from your keyboard in accompaniment with the playback. The reason for this is that science has not learned how to travel backwards in time.

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(b) Currently it is necessary to have one instrument a track to drive GPO. The channel indicates the instrument on the Player. Would it be possible to within Composer to allow for 'GPO' type channel change when an instrument changes, so as to avoid the need to have separate staves.<!-/quote-!><hr size=0></blockquote>Composer Pro already has Keyswitch (KS) events, that change the GPO instrument sound via special pitch triggers. Also, Composer Pro already has channel change events which change the channel assignment of a track mid-stream. This allows to you select a different GPO sound (in a different GPO Player slot position = MIDI channel) in the middle of a track.

The Keyswitch KS support is described in the GPO tutorial I wrote. It just occurred to me that I forgot to describe the mid-track channel change support.

Cheers
-- Mark