Invention #2 makes my head asplode

[cpessimist]

I love bach but I'm having great difficultly learning this piece!  It never gives my brain time off to relax.  I'm going one measure at a time hands separate and then combining them and chugging through, then after each measure I can play hands together I play everything up to where I just learned hands together.  Is there a better way to do this, or should I just keep trucking?

Also measure 10 right before you play a *** note D on the right hand, it sounds very dissonant, is that note supposed to be an A flat?

Thanks in advance

[keyboardclass]

I would at least learn a whole section before putting hands together.  Bar ten you have got an Ab against a G just before the long D - is that what you mean?  It's too passing to be of any importance.