Vocalize No.5 or Tenderness is a piece of music composed by Sergei Rachmaninoff. The document discusses that the music has pronounced lyricism and expressive breadth. It uses structural ingenuity and a rich orchestral palette. The music is described as harmonic, touching, dramatic, and sometimes mystical. It has traits of both classic and romantic music. Sergei Rachmaninoff was a Russian composer, pianist, and conductor from the late Romantic period known for his skill at the piano and as one of the last great representatives of Romanticism in Russian classical music.