Old songs now represent 70 percent of the U.S. music market, according to the latest numbers from MRC Data, a music-analytics firm. Those who make a living from new music—especially that endangered species known as the working musician—should look at these figures with fear and trembling. But the news gets worse: The new-music market is actually shrinking. All the growth in the market is coming from old songs.

The 200 most popular new tracks now regularly account for less than 5 percent of total streams. That rate was twice as high just three years ago. The mix of songs actually purchased by consumers is even more tilted toward older music. The current list of most-downloaded tracks on iTunes is filled with the names of bands from the previous century, such as Creedence Clearwater Revival and The Police…

Never before in history have new tracks attained hit status while generating so little cultural impact. In fact, the audience seems to be embracing the hits of decades past instead. Success was always short-lived in the music business, but now even new songs that become bona fide hits can pass unnoticed by much of the population.