Robert Kelly Thomas is an American singer, songwriter, and multi-instrumentalist. 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, peaked 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.

Santana is an American rock band formed in San Francisco in 1966 by Mexican-born guitarist Carlos Santana. The band has undergone various recording and performing line-ups in its history, with Santana being the only consistent member. After signing with Columbia Records, the band's appearance at the Woodstock Festival in 1969 increased their profile, and they went on to record the commercially successful and critically-acclaimed albums Santana (1969), Abraxas (1970), and Santana III (1971). These were recorded by the group's "classic" line-up, featuring Gregg Rolie, Michael Carabello, Michael Shrieve, David Brown, and José "Chepito" Areas. Hit songs of this period include "Evil Ways", "Black Magic Woman", "Oye Como Va", and the instrumental "Samba Pa Ti".