Pacho Flores explicando Upsound

Fragmento de conversación entre Pacho Flores y Bob Koertshuis, trompeta solista de la Het Gelders Orkest. Pacho explica el funcionamiento del UpSound. --- Fragment of a conversation between Pacho Flores and Bob Koertshuis, principal trumpet of the Het Gelders Orkest. Pacho explains how the UpSound works.