be in the region of $3 billion last month, Dr Dre became the world's first hip hop billionaire as part of Apple's most expensive acquisition of all time.

Here are some entrepreneurial lessons we can learn from his meteoric rise from the streets of Compton to the global board room:

Mentoring Enriches

Dr Dre used music as his way out of the poverty cycle. In his youth, role models were few and far between. It was clear to him that he needed to move on from the City if he was to progress. Being a poor academic performer, he realised that university wasn’t an option. He decided to turn his passion for music into a career. Having made it successfully, Dre always kept an eye out for young talent to supportrecorded over 200 songs as part of the project but has refused to put it out because he does not want to tarnish his legacy by putting out a record that doesn't live up to his own high standards. In light of the recent deal, Dr Dre has been compared to Steve Job's as both men have an obsession with performing tasks to the highest standards and not adhering to artificial deadlines.

Famously, Dr Dre made an aspiring hip-hop artist Bishop Lamont record the same bar of vocals 107 times. These are the levels of perfection he expects from those that he works with. This quest for perfection is apparent in Dre's 2001 classic "Forget about Dre" in which Eminem's harmonies repeatedly intersect Dre's carefully scripted rapping in almost