A NEW PROBLEM WITH SONAR X1 PRODUCER

Hello everyone. Advice would be very, very welcome. I have encountered a new and sudden problem with X1 Producer: whatever audio tracks I add quickly change tempo. For example, I recorded a drum track direct from my Tyros 2 which, to my ears, sounded in time. But on playback, round about 1min 11 secs, the tempo drops, rendering it useless. This is happening with everything I record. As a test, I muted everything within the project and pressed play, keeping the metronome. And this kept perfect time with my Tyros, which seems to suggest that the problem lies within the software. Can any of you wonderful people help?
Mark
*** HAVE JUST TRIED TO RECORD WITH THE AUDIO METRONOME PLAYING. ALTHOUGH IT KEPT TIME WHEN I PREVIOUSLY PRESSED PLAY, NOW THAT I HAVE PRESSED RECORD, IT HAS GONE OUT OF SYNC. AND, STRANGELY, IT HAS HAPPENED AT THE SAME POINT IN THE TRACK (1min 11secs). TO SAY I AM CONFUSED WOULD BE AN UNDERSTATEMENT!

Yes it is. I use an Edirol UA-4FX. Both are set to 44100. I tried changing them but Sonar automatically reset it. I have considered the possibility that the fault lies with my Tyros 2, but the tempo sounds constant and, certainly, the tempo change within Sonar is very noticeable. 
The only changes in the past couple of days have been a Windows Update and setting up my daughter's new MP3 player. I am totally flummoxed.
Mark

Hello again.Thank you for your help.
After the problem raised its ugly head, I created a new project. But the issue happened again.
My Tyros is connected via audio leads. (I don't use MIDI, purely because I have never been able to understand it! If I come across as being technically-bereft, it's because I am. But this audio method has served me reasonably well, with two backing-tracks to be used in their entirety on forthcoming albums by successful artistes).
I have examined all the settings, and cannot locate the cause of the issue.
Mark 

Anything untoward in the tempo map? (Alt+Shift+5)
Or in the Event list? (Alt+8)

Hi. I can see nothing untoward in the tempo map or event list. One thing however: I played an auto-accompaniment on the Tyros and recorded it with X1 with the audio metronome: all seemed to go well until I manually played a new chord - and that's when the two went out of sync. Could this be that my Tyros is on the way out?
Mark
P.S. HAVE TRIED A NEW RHYTHM, DIFFERENT TEMPO, AND RECORDED IT WHILE CONSTANTLY CHANGING CHORDS. BUT THIS HAS NOT AFFECTED ANYTHING!!! THIS IS BIZARRE.

If you have not synced the Tyros and Sonar in any way with midi, it is possible that their clocks are slightly different. Initially I thought you said there was a dramatic tempo change, but if you're saying they just "drift out of sync" over time this could be a normal clock difference. Meaning, for example, the Tyros 120bpm is really 120.02 bpm.

Hi Sanderxpander. Are you in a position to direct me to where I can learn how to put this right? (Although I am puzzled as to why this has only now started happening after 10 years.)
Mark

It happened. But probably coincidence.
Okay: just tried yet again.
Used a nice Latin rhythm at 120bpm, well above its ideal. I recorded it with the audio metronome playing. And everything sounded fine until 2min 4secs when I swear I could hear the audio and metronome lose sync. I have listened back and, sure enough, this is the case. Perhaps tellingly (you might know much better than me) there is ALSO a clearly audible 'blip' at the point where the tempo changes. I did not hear it while recording. But it is there for all to hear on playback, every time. A sudden dull sound, then the sync goes.
I know it all sounds ridiculous. But believe me, it is happening and I am at my wits' end.
Mark

Basically, you can watch the sound being recorded. Just hit a single note in time to the metronome, your playing will produce clearly visible audio peaks. Do they line up with the grid as you record?
And are they suddenly somewhere no longer lined up with the grid when you have stopped recording?
 
 

"Basically, you can watch the sound being recorded. Just hit a single note in time to the metronome, your playing will produce clearly visible audio peaks. Do they line up with the grid as you record?
And are they suddenly somewhere no longer lined up with the grid when you have stopped recording?"
Okay, gonna do that now.

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?

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?
 

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?

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.