Trey Lorenz (born Lloyd Lorenz Smith; January 19, 1969) is an American R&B singer-songwriter and record producer. He was born in Florence, South Carolina and is a graduate of Wilson High School. Lorenz is best known for his duet with recording artist Mariah Carey on "I'll Be There," a cover of the 1970 number-one Jackson 5 recording of the same name. The record topped the US Billboard Hot 100 and R&B singles chart a second time in 1992 and earned Lorenz and Carey both a Grammy Award nomination for Best R&B Performance by a Duo or Group with Vocals. They would later perform the song again at the funeral of Michael Jackson on July 7, 2009. 　　Lorenz was subsequently offered a record deal and recorded a critically successful self-titled debut album. The single "Someone to Hold" (co-written and co-produced by Carey, who also sang backup vocals) peaked at number nineteen on the U.S. Billboard Hot 100 singles chart. The album itself, however, performed poorly and only peaked at #111 on the Billboard 200 albums chart, and Lorenz was dropped by his label. 　　Lorenz returned to a career in background vocals, working for artists such as TLC, the late Selena, and Usher and also performed a duet with Basia titled "She Deserves It" . He also appeared on Redhead Kingpin and the F.B.I.'s 1991 second album The Album With No Name on the songs《It's A Love Thang (Word)》, 《Nice And Slow》and 《Get It Together》He began to support Mariah Carey on her albums and concert tours again in 1997, including a featured spot in the 2003 Charmbracelet World Tour, and he recorded the songs 《Make You Happy》for the Men in Black soundtrack, which he co-wrote with Carey and Cory Rooney, and "I'm Still Not Over You" for the Money Train soundtrack. He was signed to Carey's short-lived imprint label, MonarC, and to Jermaine Dupri's Atlanta-based So So Def Records label, but never put out any music under the label. 　　Lorenz's second album, Mr. Mista, was released on September 16, 2006. Among the songs on the new album is 《See You Sometime》, a song Lorenz sang during the Charmbracelet World Tour. Lorenz launched his second album during the time he was prominently featured in Carey's 2006 The Adventures of Mimi Tour, doing background vocals and singing three songs, 《Never Too Much》, 《A House Is Not a Home》and 《Crazy》, during one of her many costume changes.Trey Lorenz appeared on Jessica Simpson's 2010 PBS Christmas Special, singing a duet version 《O Holy Night》with her. In 2014, he accompanied Carey on her The Elusive Chanteuse Show concert tour starting from October 4 to November 16.