Multitaksers Meditation

I (would) like to meditate. I attempt mediation… which is likely half my problem with meditation.
 
One of my challenges with my mind is that I am such a multi-tasker, and have been for so long, that my natural tendency is to have multiple "voices" running in my mind at all times. At work this is an asset.  I can be working on one thing and still be aware of other things.  I can "juggle" many priorities and tasks during the day. I can focus well for stretches, but need periodic breaks to survey my mind for other threads that need attention. 
  
Anyway, when I meditate with a mantra, I find that I can concentrate on the mantra for a short period of time, repeating it, breathing it in and out, being very conscious and in the here and now… and still be composing a grocery list at the same time.  The interal voice that is repeating the mantra continues. And another internal voice is saying: toothpaste, yogurt, eggs.
 
My new tactic for meditaion is that, when I find that other voice butting in, I get that voice to also start saying the mantra. It sounds something like this:
 
Om Mane Padme Hum.
Om Mane Padme Hum.
Om Mane Padme Hum.
Om Mane Padme Hum.          Store
Om Mane Padme Hum.          Toothpaste
Om Mane Padme Hum.          Yogurt
Om Mane Padme Hum.          Eggs
Om Mane Padme Hum.          Om Mane Padme Hum.
Om Mane Padme Hum.          Om Mane Padme Hum.
Om Mane Padme Hum.          Om Mane Padme Hum.
Om Mane Padme Hum.          Om Mane Padme Hum.        I need to call Lorna
Om Mane Padme Hum.          Om Mane Padme Hum.        Maybe she's like to go to that movie
Om Mane Padme Hum.          Om Mane Padme Hum.        What night do I have free?
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.       
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.       
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.            Some of those good yellow apples
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.            And more nuts
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.            Am I out of milk?
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.            Om Mane Padme Hum
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.            Om Mane Padme Hum
Om Mane Padme Hum.          Om Mane Padme Hum.        Om Mane Padme Hum.            Om Mane Padme Hum
 
 
It becomes a chorus inside my head.  So far I have been able to get a chorus of 4 going at the same time.  Usually in harmony.  I guess that makes it a barbara-shop-quartet!
 
I continue to explore…
Cheers,
-B
 
So far I have only been able to sustain this