The Fado Museum stands at the foot of Alfama, in the streets the music came out of, and it exists to make an unwritten tradition legible. Fado has no score and no printed rules; a singer learns it by hearing it, and what the museum does is put six generations of that hearing in one room. At its centre is a wall of listening posts where you sit and go through the voices in order.
It begins with the first singers ever captured on record in the phonograph era, runs through Amália Rodrigues, and reaches the people singing this week. Around the listening wall are instruments, posters and film. UNESCO added fado to its list of intangible heritage in 2011, and the documentation behind that application is held here. Come out of the door and the lanes that sent people into this trade climb away directly in front of you.