Robert Matthew is a young musician who has been known for his performance as a bass player from an alternative rock band from Jakarta called Ringgo 5. In songwriting, Robert contributed a lot to the writing of the works performed by Ringgo 5, such as Do You Love Me?, Fool For You, Valeria, If Only You Knew, and several other songs
Formed on May 15, 2015, Ringgo 5 released their first EP entitled Tell Me which was ranked 9th on iTunes Indonesia for several weeks. From the 4-song album, Ringgo 5's first single, Tell Me, was released to YouTube and received lot of positive reactions. On August 25, 2017, Ringgo 5 released their debut album entitled Emotion. This album depicts teenage love stories and other teenage behavior, with songs such as Best Heartbreak, Promise, and It's You.