Multiple Compatibility Types: The piano keyboard stickers are designed to fit keyboards with 88/76/61/54/49/37 keys. They are compatible with grand pianos, upright pianos, and digital pianos alike. Transparent and Removable: The piano keyboard stickers are transparent and very thin, you can hardly feel their presence while playing. They can be easily pasted and removed without leaving any sticky residue behind. Colorful and Eye-catching: The piano stickers come in vibrant colors that instantly grab attention. The bright and contrasting colors make it easier for beginners to distinguish between different keys, enhancing their learning experience and making practice more enjoyable. Easy to Install: The keyboard stickers are pre-cut and designed to perfectly fit each key, ensuring accurate placement. Simply peel off the backing and follow the paste sequence to apply them to the corresponding keys. Effective Teaching Tool: The piano key stickers serve as an effective teaching aid, especially for beginners and kids. The piano notes provide a visual reference for key identification, helping students learn notes, scales, and chords with ease.