Hi all,
 
Using Sonar X1, Windows 7 32-bit.
 
Recently bought an M-Audio Oxygen 88 keyboard.
 
All is well, apart from I noticed a slight phasing on notes (like two of the same note being played). 
 
Sure enough, when I looked at 'Staff View' it showed two notes for every one I played.
 
Any ideas?
 
Thanks

Is the Oxygen 88 capable of sending on two channels at the same time? Check the Event List view to see what channel the duplicate events are on. Or possibly you have the both MIDI DIN and USB connections from the keyboard, and the track input is set to All Inputs - Omni.

Got it! I did have USB and DIN connected.
 
Thank you brundlefly