Three Easy Pieces (Stravinsky) is similar to them in the sense that they were composed for his little children to play with him, Stravinsky decided to write pieces for four hands to teach them how to play the piano. The set was composed in Clarens, in 1914 and 1915 and was presented and first performed by José Iturbi, in April 22, 1918. It was eventually published in 1917. The "Three Easy Pieces" take approximately three minutes to perform. The movement list is as follows: Even though they are titled as "easy", only the left part is easy, the right hand sustaining the whole burden
Instrument error five-pound weight could be measured on a scale and then the difference between five pounds and the measured weight could be the accuracy. The second definition makes accuracy related to calibration, while the first definition does not. The instrument error is not like random error, that can't be removed. Sometimes the removal of instrument errors are very easy, but it is case dependent. In Engineering instruments, like voltmeter or ammeter for example, the instrument error is very difficult to remove. Ammeter has built in resistance, which can't be removed either way. So the only way is to minimize it. On