Seeking help with "Random" playback

I've searched for and read many forum topics concerning "random". I just can't seem to hit upon my specific circumstance. So here goes:

I'm running LMS 7.9 on a Readynas Pro. I have been very happy with the standard Smart Mix (thanks again Michael) plugin functions. However, I would like to have an all day Beatles marathon. I only want to hear Beatles tunes randomly selected from across all their albums I have on the server.

How can I accomplish this act of randomness?

Is this a task best suited to Smart Mix using "The Blender" and/or creating a "receipe"? (I need to learn more about this)

Hope I'm not overlooking something very simple - Please advise....

Thanks
Jim