The Shrouded Sky update in ARC Raiders seems to be encouraging us to go on a musical journey by finding pianos on the map.
We already had the Guitar in older updates, which was also part of its own puzzle. The pianos (there are two as of writing) are far easier to find, and you can discover them on your raid. I am unsure if the pianos are part of a puzzle, but here’s where you can find and play them.
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How to find all pianos in ARC Raiders
One of the two pianos you can find is on the Buried City map, while the other one is on Blue Gate.
Piano location in the Buried City

The Piano in Buried City is located inside one of the apartment buildings in front of the Old Town Hatch (you can escape using a hatch key). I have marked the exact spot on the image above. However, this area usually has plenty of ARCs, so approach it from the back. There will be a small door that you can use to get inside.
Once inside, use the stairs to go to the top floor. There’s a huge broken wall. Pass through it and move straight. Take a left, and you’ll find a breachable door. Break the lock and head inside, and you’ll find the Piano.
Piano location in Blue Gate

The Piano in Blue Gate is easier to find as it’s located in the Raider’s Refuge. It’s a named POI, so it’s easy to spot. The Piano will be by one of the walls (depending on which of the three doors you use to enter). This spot also has plenty of ARCs patrolling the area, and I found the newly-released Comet as well.
Try to clear the ARCs first before approaching the Piano. There’s a Turret as well that I have found in the Raider’s Refuge. In simple words, carry strong weapons that allow you to deal with enemies efficiently.
How to play the Piano in ARC Raiders
Once you spot a piano, move close to it. You’ll get the chance to interact and play the keys. The complete tune takes a few seconds to complete, but you can stop playing it early. I really like the tune and found it to be quite catchy. More importantly, we don’t have to solve a puzzle this time around.