Réponse :
1. In 1978, disco became the most popular musical style because of the popularity of clubs, but lots of youngs poor people didn't manage to enter the clubs at that time.
2. That's why hip-hop has always been a street movement.
3. In the eighties, kids in the streets had not enough money to buy instruments.
4. So, since that time, break-dancers have always used recorded music to dance.
Explications :