They contain carbon, hydrogen, oxygen and nitrogen and usually sulfur, occasionally phosphorus. Proteins form a large and essential part of the body mass, comprising especially cell membranes, connective tissue, muscles, enzymes, hormones, blood proteins. To maintain this mass the diet must contain a high proportion of protein, especially in growing animals and those recovering from debilitating diseases.
Russian composer Sergei Prokofiev wrote Peter and the Wolf in 1936 after returning to Moscow following a 19-year, self-imposed exile. It is a children's musical story that teaches about the orchestra by introducing various characters portrayed by seven themes played on either solo instruments or groups of instruments.
Essay: Prokofievâs âPeter & the Wolfâ. If Sergei Prokofiev had composed nothing except âPeter and the Wolf,â he would have left a sizable mark. The work has helped introduce generations of children to the instruments of the orchestra and the concept of telling a story through music, fulfilling the goal Prokofiev set for himself in 1936.