For Radiohead fans, “Dawn Chorus” was already one of those mythological compositions — mentioned by Thom Yorke as far back as 2009, a lingering prospect for subsequent albums, a recurring phrase when the band established a new company bearing the moniker ahead of A Moon Shaped Pool. So it was a special surprise when Yorke included “Dawn Chorus” on his great 2019 solo endeavor ANIMA, and presented it as an aching, outreached hand, a moment of vulnerability amidst the beats and twists of the album otherwise. It was the kind of moment that gripped many fans. Apparently Jon Hopkins was one of them.