The Late Show with David Letterman called it "MacArthur Night" last night, as a spectacular version of Jimmy Webb's classic song was performed in its six-minute entirety — by the CBS Orchestra, led by “Late Show” band leader Paul Schaffer, with Webb playing the harpsichord. Shaffer, Will Lee (on vocals), Webb et al. will be assisted by an additional 23 musicians, including a bevy of string players. Webb is also known for penning “Worst That Could Happen” as well as “Wichita Lineman” and “By the Time I Get to Phoenix” — both recorded by Glen Campbell.

The song, famously recorded in 1968 by actor Richard Harris, has been covered by everyone from Carrie Underwood to Weird Al Yankovic to Donna Summer, who did a chart-topping disco version in 1978.

"If you missed this performance on Monday night’s “Late Show With David Letterman,” carve 6 minutes out of your day and take in a version of “MacArthur Park” that even Donna Summer, Waylon Jennings and Wayne Newton would have to admit may well be the best performance of the Jimmy Webb classic ever–from the orchestration to Will Lee’s vocals.

The cherry on top? Check out who’s playing keyboard and piano with Paul Shaffer–Mr. Webb himself."
– The Blaze

Paul Shaffer, Jimmy Webb, Will Lee and the CBS Orchestra blow the roof off with a performance of "MacArthur Park."