Hip-hop star Molemo 'Jub Jub' Maarohanye and his friend Themba Tshabalala were arrested in 2010 after they crashed their mini coopers into a group of school children in Soweto, killing four and leaving two permanently brain damaged.
He says the best way to ask for forgiveness is through his music.
I can't knock on everyone's door.— Jub Jub, hip-hop artist
He says he did a great deal of introspection when serving his prison term and has come to terms with his past.
Til today it is still a bit hard for me to forgive myself.— Jub Jub, hip-hop artist
He says it happened and he is not proud of it but he served time, and hopes his lessons can help other young people not to make the same mistakes, and is involved in motivational speaking to help the youth.
He says the fact that he is still alive means he has a chance to do something positive.
Watch the interview and Jub Jub performing a couple of his tracks below: