aytracker : an archive of unreleased music, outtakes from albums and old versions of songs, and more...

Unreleased (Selection 1: Sonic4's Eras)

                           

BEFORE THE UNDERGROUND CLASSROOM                                  THE CLASSROOM TRILOGY ERA           
(2021E-2022M)                                                                         (2022M-2022L)

                           

THE CLASSIC "LITERATURE CLUB" ERA                                      THE MODERN "TOUHOU" ERA          
(2023E-2024E)                                                                           (2024E-2024L)

   

THE POST MODERN "AY" ERA
(2025E-2026M)