Small Circle of Friends a.k.a STUDIO75 are Japanese multi-genre artist duo and music production unit of Satsuki Muto (Vocal, Programming, DJ, fashion designer)& Azuma Riki (rap, vocals, programming, DJ), combining the sounds of hip hop, soul, electronic, and jazz. The unit of Azuma and Satsuki "Small Circle of friends" (representative song: Nami-yosete) debuted in 1993 and has continued for over 30 years since then. This time, the three works from the series 4.5.6, which were released on bandcamp, have been made into a BEST disc. In this work, "A Day in the Life", from awakening to sleep, is replaced by a beat, and left as a trace of life. No matter how the landscape of the times changes, I hope it will always be a sound that flows alongside our daily lives.