As the name suggests, it is the second in a series of studio albums containing full-sized versions of cover songs featured in D4DJ Groovy Mix. It was released on July 21, 2021.
Just like BanG Dream and other D4DJ cover songs, there are some boomer songs there. For instance, there are Laruku's READY STEADY GO (Fullmetal Alchemist) and Climax Jump (Kamen Rider Den-O). There are some zoomer songs as well, most notably Hololive's Shiny Smily Story.
For more information: https://d4dj.fandom.com/wiki/D4DJ_Groovy_Mix_Cover_Tracks_Vol.2
>inb4 fandom wiki xDDDDD