The 24-Hour Endurance 1,000 Anime Song Medley karaoke marathon has a nearly 20 year old legacy dating back to the Japanese SF convention RYUCON of 1994. This year, you didn't have to make it to Shinjiku Loft Plus One to appreciate the awesome promo art by parody artist @keiichisennsei (Keiichi Tanaka of ComiPro! fame), featuring modern favorites drawn in the style of legendary manga authors like Osamu Tezuka and Leiji Matsumoto.
Mainstays of 1,000 song no-stop events include "Anison Baka Ichidai" ("An Anison-Crazy Lifetime") author Keisaku Kimura, manga artist Kazushi Hinoki, and repeat guest Isao Taira of "Fukkatsu no Ideon" and "Galaxy Cyclone Braiger" and MIQ of "Aura Battler Dunbine" and "Heavy Metal L-Gaim."
This year's started with Azumanga Daioh's "Soramimi Cake" before hitting favorites from Lucky Star, Haruhi and Digimon, then wandering into the depth of anison from there.
Some of the artist's other parody art...