Rarity: 25 To grow, plant a Sheet Music: Flat Bass Seed. (Or splice a Sheet Music: Bass Note Seed with a Rock Seed) This item can only be used in World-Locked worlds. Like the Sheet Music: Flat Piano, it has the same function except Sheet Music: Flat Bass has a deeper sound rather than the Sheet Music: Flat Piano. To make this Sheet Music item, you need are Sheet Music: Bass Note Seed and Rock Seed.If you place 2 Sheet Music:Flat Bass next to each other, they will connect with each other creating a continous pattern.