Assassin’s Creed Shadows contains 7 secret Music Locations. They are a type of collectible hidden in far-off places in the wilderness. Each of them teaches Shinobu a new song, who then stands in your hideout area and plays the songs.
When you get close to the Music collectibles they get marked by a white 
music icon. Unlike other collectibles they aren’t indicated by “?” icons on the map. They only appear when fully zooming in on the map. If you discovered any, you can filter for them on the map by pressing D-Pad down, but collected ones will disappear from the map. At each location you will find an NPC playing flute, interact with the NPC to unlock a new song.
Izumi Settsu
#1 – Muggy Lands
Yamashiro
#2 – Little Leaf Glade
Omi
#3 – Ado River Valley
Iga
#4 – Nabari Wilds
Yamato
#5 – Asuka Rocks Basin
Kii
#6 – Sazae Oni Shores
#7 – Nakahechi Route
For all other collectibles check out the Assassin’s Creed Shadows Collectible Guide.
