Olivine has the formulae (Mg,Fe)2SiO4 and a relative hardness of 7. It's name is derived from the characteristic olive green colour. A common rock forming mineral. A clear green variety is called peridot and has some uses as a gem.
Hear it on YouTube. Here's a piece that many people know, and rightfully so! This famous classical piece from the romantic period is one of those pieces that has the ability to make anyone feel happy. Composed in the 1920s, for a ballet, the piece was an instant success.
The Romantic period started around 1830 and ended around 1900, as compositions became increasingly expressive and inventive. Expansive symphonies, virtuosic piano music, dramatic operas, and passionate songs took inspiration from art and literature. Famous Romantic composers include Tchaikovsky, Brahms, Mahler, and Verdi â to name but a few! The Romantic era is known for its intense energy and passion. The rigid forms of classical music gave way to greater expression, and music grew closer to art, literature and theatre.