Mark
 

It is as if these clocks of which you speak have parted company this week. Is this something I can put right, do you think?
Mark
 

musicmarkck
"You say it is fine on record, but not fine on playback?"
No, I heard it go out of sync while recording. It was only on playback that I hear this strange blip, just before sync is lost.
"I also don't understand how you are achieving the sync in the first place."
Good question. Once recording is over, I remove silence from the track, then line it up so that it starts perfectly in time. This has ALWAYS worked perfectly, until this week. 
Mark

OK, now I understand how you are achieving sync. Normally one would make either Sonar or the Tyros auto accomp. the master, then MIDI the two instruments. But over a 3 minute song, you can get away with re-aligning the start.
 
Are they drifting out of sync or is there a blip and suddenly there is a dramatically different tempo?
 
If dramatic, can you figure out if the Tyros or the metronome in Sonar changed?

With that experiment, it was definitely gradual.
Mark

Sorry, our messages are crossing each other.
So you hit the keys as you listen to the Sonar metronome - then when you listen on playback, they drift apart?
Can you see this on the screen?
 

Apologies.
They drifted apart as I was playing/recording. I could hear it. And, yes, I could see this happening on the screen.

How could they drift apart as you were recording?
Was Sonar's metronome not blipping in time with it's own grid?
 
Edit: This has just occurred to me:
Does the Tyros have a metronome, too? Is that what you have been following whilst playing?

The metronome was keeping time with the grid. But the auto accomp was audibly falling behind the metronome, plus I could see that the peaks were also trailing (just) behind.
In other words, X1 seemed to be behaving, but Tyros was not.
I have tried muting everything within the project, then pressing play... and the metronome is in line with the grid. It is what I record that fails to do this.

If you are hitting a note on the Tyros in time with Sonar's metronome, then it MUST be lining up.
 
So the auto accomp clock in the Tyros is drifting.
If the drift is constant, you could try the following:
 
1) Record your song as you have been doing.
2) Align the start, again as you have been doing.
3) Go to the end of the song.
4) Move the mouse over the end of the recorded Tyros track. You should see the end lines become blue.
5) Press Ctrl. and the lines should become yellow. In this state, drag the end of the recorded clip to line up with the grid.
 
As long as the drift is A) constant and B) not more than a bar, you should be able to fix it.

I might well be misunderstanding you, but... I have tried what you suggest re. stretching the track, but this seems somewhat hit-and-miss. I have yet to succeed in matching the Tyros track with the grid and, even if I did, it surely would only ever be visual guesswork? It is well worth trying, of course, and thank you, but it does not correct the actual issue, which seems to be that my Tyros is losing time.