I enjoy playing the piano which is a very old instrument and very expensive. There are lots of famous songs that feature pianos of course.
Piano
The piano is an acoustic, stringed musical instrument invented in Italy by Bartolomeo Cristofori around the year 1700 (the exact year is uncertain), in which the strings are struck by hammers. It is played using a keyboard, which is a row of keys (small levers) that the performer presses down or strikes with the fingers and thumbs of both hands to cause the hammers to strike the strings. 
The word piano is a shortened form of "pianoforte", the Italian term for the early 1700s versions
wrote for piano after getting it was the four-hand transcription of the Grosse Fugue ... and the indications are that he was playing very little even for himself in the last three years of his life."
In 1829, the 19-year-old Frédéric Chopin came to Vienna from Poland to give concert performances on the piano. Both Graf and his rival Matthäus Andreas Stein offered Chopin an instrument to use. Chopin, who was familiar with foreign pianos, unhesitatingly selected the Graf, and his Vienna concerts were a success.