In 1995 she released "I Must Be Free". In 1996, she released another single "We Gotta Love", which was the last single of hers to be released physically on CD or vinyl. In 1998 she provided the lead vocals for "Keep On Groovin'" by One Vision under the alias Shimma. In 2000 she released another single through MP3.com called "Just Can't Get Enough". 2009 found Kym working on new material for an upcoming CD as well as planning tour dates.
Kym also co-wrote one of the CeCe Peniston's biggest hits, "Keep On Walkin'" (No.1 in US Dance, No.15 in Hot 100), produced by Hurley. In the U.S.. In addition Kym wrote the R&B hit "Good Morning" performed by Tene Williams (recording artist Howard Hewitt's niece) and produced by Maurice Joshua. Other songs written by Sims include "Crazy" and "Just Can't Get Enough" to name a few.