Pick your joke of choice: CMT has stepped all over "Sun Records'" blue suede shoes. CMT has chosen not to walk the line. There's no more shakin' going on at CMT. I could go on.

The point is, the network has ended "Sun Records" after its first season. I say "ended" instead of canceled, because according to the network's programming chief, that was the plan all along.

"It always was to be a limited-run series," Jayson Dinsmore told Deadline.com last month. "It did extremely well, but there are no current plans for additional episodes."

It's tricky with historical shows like this -- there's naturally a limited amount of content to work with. The writers can't just make up more if the ratings are good.

But as they say, where there's a will, there's a way. And Dinsmore did say there may yet be a will at CMT, just not right now. "We may revisit, you never know, because it did quite well."

The show told the true story of a series of recording sessions at the Sun Records studio, where Elvis Presley, Jerry Lee Lewis, Carl Perkins and Johnny Cash collaborated to revolutionize popular music and essentially invent rock 'n' roll. Though the sessions themselves are a fairly limited story well to draw from, the stories of those musicians, of Sun Records and of rock 'n' roll as a whole, are quite a bit bigger.

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