After 40-plus years and more than 2,000 gigs together, most bands wouldn’t feel tasked to outdo themselves.

But Phish — the improvisational rock quartet formed in a University of Vermont dorm room in 1983 — has tried to push the envelope in every way possible since its inception.

At Mondegreen, the band’s four-day festival held this month outside Dover Motor Speedway in Delaware, Phish proved that it’s not only the most capable rock band to ever grace a stage, but one of the most brilliant and industrious outfits of all time.

For three nights and an afternoon at the venue known as the Woodlands, Phish astonished tens of thousands of devotees with monumental sets of music featuring songs from across its expansive catalogue and some of its most beloved covers, too.