Size matters

After buying a victrolla last year, and buying old 78's, I decided to research the subject of recorded music.  The standard of the 78 rpm took years to get everyone on track, which was no surprise.  What did get me was that the idea of the 3 minute song emerged from necessity.  It was all those records could fit, a maximum length based on available surface area.  Here we are, a century later, and the same restrictions apply.  Length of song restrictions are like restricting painting colors, or book length.  I have been looking into submitting my music for airplay, but the idea of picking the short ones or editing the long ones is a painful requirement.  I don't expect anyone to play, much less listen to "Conspiracy Therapy", but cutting it up would be ridiculous.  Just a thought.