Joshua Winslow Groban (born in Los Angeles on February 27, 1981) is an American singer known for his mature, dusky baritone voice. His musical style ranges from classical to pop. After only one year in the theatre department at Carnegie Mellon University, his choice school, Groban left when he was offered a recording contract at Warner Bros. Records through David Foster's own 143 Records imprint.
Kelly Brianne Clarkson (born April 24, 1982 in Fort Worth, TX) is a Grammy-winning American singer-songwriter and occasional actress. Clarkson recorded her debut album with RCA Records after having won the highly-publicized first season of the television series American Idol in 2002. Though originally marketed as a pop musician, she eventually developed a more rock-oriented image. Her debut album, Thankful, was released in 2003 and debuted at #1 on the Billboard 200 with almost 300,000 copies sold in its first week, now certified double platinum with over 4.