Ben Johnston’s String Quartets Finally Performed?

Source: The New York Times.

According to experts, the most difficult string quartet ever written is Ben Johnston’s Quartet No. 7. It was composed in 1984 but went unperformed for decades. Musicians who knew the score, with the ingenious palindromic structure of one movement and variations teeming with over a thousand microscopically distinct pitches, considered it well-nigh unplayable.