From Billie Eilish's oblique pop provocation and a Sámi yoik without words, through hip-hop, vaporwave, a rewritten patriotic hymn, a demo for a song cycle about a tree, and a master's thesis processed through grief, to Radiohead closing the set at their Oxford home — Earth Eclectic assembles an urgent, genre-spanning chorus of artists confronting the climate crisis, while the sound of a melting Swiss glacier runs beneath it all.