Stuart Matthewman net worth: Stuart Matthewman is an English songwriter, musician, and record producer who has a net worth of $4 million. Stuart Matthewman is also known as Cottonbelly. He plays the guitar, saxophone, keyboards, and midi programming. He is best known for being the guitarist and saxophonist of the band Sade and has also been a member of the bands Sweetback and Twin Danger. Sade formed in 1982 and released their debut studio album Diamond Life in 1984 which reached #1 in three countries, #5 on the Billboard 200, #3 on the US R&B chart, and #2 in the UK. Sade released the album Promise in 1985 which reached #1 on the Billboard 200 and US R&B chart as well as in the UK and other countries. Their album Stronger Than Pride was released in 1988 and reached #1 in two countries and #3 in the UK and on the US R&B chart. Sade's album Love Deluxe was released in 1992 and reached #3 on the Billboard 200 as did their album Lovers Rock in 2000. Their album Solder of Love was released in 2010 and reached #1 in the US and in multiple countries. One of their best known singles "Smooth Operator" reached #1 on the US Adult Contemporary chart.