From Stardew Valley Wiki
|Plays a flute sound when you walk past.|
Robin (6-heart event)
|Ingredients:||Wood (10) Copper Ore (2) Fiber (20)|
The Flute Block is a crafted piece of Furniture. The recipe can be obtained from Robin's 6 heart event. The Flute Block itself can be obtained as a reward for donating 3 artifacts that include the Bone Flute to the Museum.If you on a flute block, you can change the sound it emits when you walk past.