River and Payton have a sweet, yet complicated relationship that doesn't really end even after the former dies by suicide in the first episode. (If you've watched the series, you know what we're talking about.) To memorialise his former tutor, classmate, and occasional lover, Payton performs Joni Mitchell's "River" during the school wake, a moving rendition that brings tears to everyone's eyes. The song is technically a Christmas tune off Mitchell's Blue album, but it's also about a recent breakup, which makes it a perfect song choice for the high school senior.