Reginald Lamar Williams, Jr (born January 18, 1990), known professionally as R.LUM.R, is an American alternative R&B artist from Bradenton, Florida. Previously a singer-songwriter playing classical guitar under his nickname Reggie Williams, Williams has since relocated to Nashville, Tennessee where he now resides. R.LUM.R is best known for his viral 2016 single, "Frustrated" which has garnered over 50 million plays on Spotify alone as of December 6, 2019. In 2017 NPR Music named him one of their "Artists to watch at SXSW" and called him a "fast-rising artist whose falsetto is no joke."