Amolador de facas - Brazilian Yodeling

This man is blowing his whistle and yodeling his services. This is in an area in São Paulo full of apartment buildings, and his voice raises to the upper floors. This was shot from the 14th floor. He says "Amolador. Amolo facas, tesouras, alicates de unha". This is at the very root of yodeling, where people would sing their messages across the valleys and hills. Here, from the street-valley to the hills-apartments.