When I hear the term "busking," I usually think of touristy thoroughfares such as the waterfront in Victoria, British Columbia, which is typically covered with buskers year round.
Wikipedia says, "Street performance or busking is the act of performing in public places for gratuities, though "busking" is particularly associated with singing or playing music. In many countries the rewards are generally in the form of money but other gratuities such as food, drink or gifts may be given. Street performance is practiced all over the world by men, women and children and dates back to antiquity. People engaging in this practice are called street performers or buskers."
But Downey, too, has its regular busker, Felix Hackenberg, who performs regularly at the farmers' market. Check him out yourself, Saturday mornings.