MIDI overdub issue

[robotboy]

I’m doing an organ track using a Reason plug in. I did the basics and then wanted to add a few high notes, sliding up the keyboard. The high notes recorded, but as they came in, the original notes turned silent. The wave forms are still there, but no sound. I can only hear the high notes. It’s like they are cancelling the previous notes out. But they are not deleted. I see them and if I move the cursor over them, they produce sound. I tried re-recoding the lower notes, but nothing changed.

Anyone have advice? Thanks.

[junkgear]

I'm guessing you do not have Pro Tools set to merge MIDI on record, so when you tried to record the high notes, they were recorded to a new clip rather than merged into the current one.

To enable MIDI Merge:
1 To view the MIDI controls in the Transport window, select View > Transport > MIDI Controls.
2 In the Transport window, click the MIDI Merge
button so it becomes highlighted

[robotboy]

Thanks for the response. But I do have midi merge engaged. That’s what makes this so strange. Could it be my midi device?

[junkgear]

This may be a silly question, but is the sound preset you are using on that track monophonic? Perhaps try a different sound or instrument plug-in and see if it will play more than one note at a time.