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.
waltz. romantic dance in moderate triple time. It evolved from the German Laendler lÃ¤ndler and became popular in the 18th. Cent the dance is, smooth, graceful and vital in. performancealtz. a dance for couples based on a smooth circling combined with a forward movement. The waltz is accompanied by music with a 3/4 measure (more rarely 3/8 or 6/8) and a moderately fast tempo.