Lisa Maffia is a British singer-songwriter, musician, rapper, actress, fashion designer, model and presenter, who originally came to the public's attention as the main female member of So Solid Crew. Whilst in So Solid Crew, the singer notched up five top 20 hits, including a platinum-selling single "21 Seconds" and a platinum selling album They Don't Know. As a solo artist, she has released two top 10 singles and an award-winning album including the platinum selling single "All Over". Her most recent release to date, was 2017’s "Wah Gwarn". Maffia is mixed race, born to a half-Italian mother and a Jamaican father.

"21 Seconds" is a song by UK garage group So Solid Crew. Released as the second single from their 2001 debut album They Don't Know, it was the first of five consecutive top-20 hit singles for the group.