[1] In December 1989, Singapore Broadcasting Corporation (SBC) announced plans for two new radio stations to launch in 1990, in honour of SBC's 10th anniversary and Singapore's 25th anniversary of independence; a Mandopop CHR station on 93.3 (which would serve as a Chinese counterpart to English CHR Perfect 10, which launched earlier that year), and an unnamed "MOR" station on 95.5.

[2] The Mandopop station launched on 1 January 1990 as YES 933, also known as Radio 6;[3] at launch, the station had nine deejays on four-to-five-hour shifts, and aired fewer commercials than that of Radio 3.

Broadcasting hours were extended to 02:00 in December of the same year, making it the first Chinese radio station to offer music after midnight.

In 1997, 93.3 was the most-listened radio station in Singapore for the fifth year since 1993, with almost a million listeners every week, attributed to its uniqueness which catches the attention of listeners, combined with music, deejays and creative jingles.

[5] On 20 January 2017, the station moved from Caldecott Hill to Mediacorp's new headquarters at One-north.