City Escape: Act1 is a techno remix of "Escape from the City", the iconic opening-stage theme from Sonic Adventure 2, produced by the American electronic trio Cash Cash for the 2011 milestone title Sonic Generations. The track reimagines Ted Poley and Tony Harnell's vocal performance over a driving four-on-the-floor house beat, matching the high-speed platforming of the City Escape stage as experienced in the Classic Sonic portion of the game. The original composition was by series veteran Jun Senoue, who has served as the sound director for numerous Sonic titles. City Escape: Act1 was added to the very first maimai arcade release on November 7, 2012 as part of a SEGA crossover selection, making it one of the earliest third-party franchise tracks in the game's library, predating the extensive DX collaboration era by several years. Across maimai version updates, the song has seen multiple level adjustments as the game's difficulty scaling evolved, and its in-game genre has shifted from GAME/ANIME through SEGA and ORIGINAL before settling on GAME & VARIETY in current DX releases. The Re:Master chart arrived later on August 11, 2016 during the maimai PiNK PLUS period, giving experienced players a second 12.7-level option alongside the original Master chart.