Robert Kelly Thomas is an American musician. He is the lead vocalist for the Florida-based alternative rock band Matchbox Twenty, which he formed in 1995 and with whom he has released five studio albums. As a solo act, he is best known for his guest performance on Santana's 1999 single "Smooth", which won three Grammy Awards, reached number one on the Billboard Hot 100, and in 2018 was named the second-most successful song in the chart's history. His 2005 single, "Lonely No More" was his first to be released as a lead solo artist. It peaked at number six on the chart and led his debut solo album, ...Something to Be (2005), which peaked atop the Billboard 200.