Stewart, a five-time Grammy Award recipient, began producing music in 1992 and has contributed to unit sales of over 50 million for his work on hip hop, R&B and pop releases.

[1] Often in tandem with production partner and R&B singer The-Dream, he has been credited on the singles "Case of the Ex" (2000) by Mya, "Me Against the Music" (2003) by Britney Spears, "Umbrella" (2007) by Rihanna, "Just Fine" (2007) by Mary J. Blige, "Single Ladies (Put a Ring On It)" (2008) by Beyoncé, "Touch My Body" (2008) and "Obsessed" (2009) by Mariah Carey, "One Time" (2009) and "Baby" (2010) by Justin Bieber, "Ride" (2010) by Ciara, and "Water" (2023) by Tyla, among others.

[2] Stewart co-founded the record company RedZone Entertainment in 1995, which signed R&B singer Frank Ocean prior to his mainstream breakthrough.

"[3] Stewart signed a publishing contract with Spirit Music Group in 2020, a deal which covered his following works as he sold his catalog to Hipgnosis Songs two years prior.

Before graduating high school, Stewart had placements with artists such as Aaron Hall, rhythm and blues trio IMx, and Chanté Moore.

He also co-wrote and produced a number of songs for Britney Spears's fourth album, In the Zone (2003), including two of its singles, "Me Against the Music" and "Outrageous", as well as "Early Mornin'" and "The Hook Up".

Rihanna's single "Umbrella", co-written with The-Dream, garnered two Grammy nominations—for Record of the Year and Song of the Year—and won the award for Best Rap/Sung Collaboration.

Its success brought Rihanna to a mainstream prominence; co-writer and business partner The-Dream ultimately signed with Def Jam Recordings to release his own singles.

In late 2007, Stewart was working with notable artists as Janet Jackson, Celine Dion, and Usher ("Moving Mountains" and "This Ain't Sex" of his album Here I Stand).

"Single Ladies" would later become a pop culture phenomenon due to its female empowerment lyrics, catchy melody and much parodied music video.

The lead single from the album, "Ride" was produced by the duo and released in April 2010; it went on to become Ciara's 12th top ten hit on the Billboard R&B/Hip-Hop Songs chart.

Stewart co-produced three songs and one bonus track from Jennifer Lopez's eighth studio album Love?, which was released in April 2011.