All else being equal, longer pianos with weightier strings have better sound and lower inharmonicity of the strings. Inharmonicity is the limit to which the frequencies of overtones (known as partials, partial tones, or harmonics) depart from whole multiples of the fundamental frequency. Pianos with shorter, thicker, and stiffer strings (e.g., baby grands) have amassed inharmonicity.
Upright pianos, also called vertical pianos, are expanded compact because the frame and strings Piano Covers are vertical, extending in both directions from the keyboard and hammers. It is examined harder to goods a sensitive piano action when the hammers move horizontally, as the vertical hammer return is dependent on springs which are prone to wear and tear.
