Former members of CB Mass Choi-ja and Gaeko returned to the local pop music scene as a new team called the “Dynamic Duo”. The rappers who had released 3 albums as CB Mass were known to have contributed in bringing rap music closer to the general public. This time, as Dynamic Duo, the two rappers declared to become the strongest combination in rap music with their debut album “Taxi Driver”. The title song of the album is Ring My Bell, a disco number originally sung by Anita Ward in the 1980s. In the ‘90s, the song was sampled into a Miami-style by Will Smith. Different from Smith’s light raps, Dynamic Duo’s Ring My Bell is garnished with serious and powerful rap and decorated with the vocal by Na-eol of Brown-eyed Soul.