[LAD] A bit more MIDI clarification please

Lets say we have a synth and a sequencer connected via jack. The sequencer spits out a command timed at position 4 (i'm deliberately keeping the numbers generic), and the synth then knows that on the 4th sample it has to do whatever the command says - again, I know it's a bit more 'interesting' than that. All fine and dandy, the synth bundles up it's data an chucks the buffer full of audio to jack. But, what happens if the synth was registered with jack before the sequencer? Presumably it is now going to get it's MIDI data *after* it has already processed that callback. Say now, I have this brilliant counter melody idea - well, it could happen :) However, I don't have a keyboard with me. Still I can just fire up jack keyboard and link it to the sequencer. Only now. the sequencer is pushing out its MIDI data before it gets anything from the keyboard. I know this sounds contrived but I have frequently done exactly this, using alsa MIDI, and I confess I've no idea what actually happens in that situation either! -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.