Jörqer (pronounced "Joker," ジョーカー) is a maimai original song by owl＊tree (Kennosuke Ono) featuring vocals by yu＊tree (Cherose). It debuted in maimai でらっくす Splash on September 17, 2020, and launched simultaneously in CHUNITHM CRYSTAL PLUS and オンゲキ SUMMER PLUS as part of a cross-game original song rollout. The track serves as the closing piece on owl＊tree's album pvq, which also contains the companion tracks Valsqotch and P-qoq, all three sharing a playing-card-inspired naming motif. Musically, Jörqer sits at a deliberate 98 BPM, built around a piano-and-guitar arrangement with subtle electronic textures. The lyrics, written by o＊tree, paint a picture of stumbling through a world of rubble and pretense, framed through the metaphor of a jester (道化), a fitting parallel to the joker card the title evokes. The production credits bring together syrah＊tree (Osamu Kubota) on piano and sa＊tree (Masaaki Sasaki) on guitar, with video production by UDON. During the maimai DX UNiVERSE update cycle, Jörqer received a dedicated music video, an uncommon occurrence, as original music videos for existing maimai songs are typically introduced at a version launch rather than mid-cycle. The addition was announced via owl＊tree's Twitter account. The MASTER chart, designed by シチミヘルツ (Shichimi Hertz) at level 13+ (constant 13.6), is notable for embedding slide patterns that trace the letters "p," "v," and "q" before the intro and final chorus, a direct visual reference to the album title pvq. The Expert chart, designed by Jack at level 11+ (constant 11.6), features 12th-note shuffle rhythms with patterns reminiscent of Valsqotch, making it a useful training ground for players working on that sibling chart.