Career
Sim auditioned for the first and second seasons of Project SuperStar in 2005 and 2006 respectively, but he did not make it as one of the finalists. Since 2008, Sim has been a youth development coach for the Singapore Athletic Association. In 2011, Sim became part of Sparkle Live Music, which was founded by singer Tay Kewei and keyboardist Lee Ein Ein, in which he performs songs at weddings.
Sim also participated in Guinness Live, a competition "to find the next William Scorpion", representing Team Firefly, along with Howie Yeo, Willis Loye and Yee Si Ling, managed by Fatt Zhai.
In 2013, Sim sung the theme song of television series The Journey: A Voyage, entitled 家乡 (Homeland). lieutenant was nominated as Best Drama Theme Song for MediaCorp"s Star Awards 20.
In 2014, Sim took part in the third season of reality singing competition Project SuperStar, in which he received 52 percent of the public votes via the app Toggle Now, defeating Abigail Yeo"s 48 percent. He was unfortunately eliminated later on in the competition.
On November 11, 2015, Sim released his first single, "Lover", a cover of Beyond"s song.