Causes. In ALS, the nerve cells that control the movement of your muscles gradually die, so your muscles progressively weaken and begin to waste away. ALS is inherited in 5 to 10 percent of cases. The other cases appear to occur randomly.
1 The smaller studio uprights usually weigh between 400 and 600 pounds. 2  The monstrous full vertical or large upright piano can weigh as much as half a ton.  A studio piano's center of gravity is also lower than a large upright's, as it is about 4 feet (1.2 m) tall as opposed to a large upright's roughly 5-foot height.
Best Answer: The piano comes in many different styles, designs, shapes and sizes. Pianos have two basic categories: the vertical and horizontal pianos. Vertical Pianos-They are called vertical pianos because of their height and the position of the strings. The height of this kind of piano range from 36 to 60 inches.There are 4 types: Horizontal Pianos-Also known as grand pianos.They are called horizontal pianos because of their length and the placement of their strings There are 6 basic types: To identify the sub-types go to http://musiced.about.com/od/beginnersgui... from which the above was taken.here are 4 types: Horizontal Pianos-Also known as grand pianos. They are called horizontal pianos because of their length and the placement of their strings There are 6 basic types: To identify the sub-types go to http://musiced.about.com/od/beginnersgui...