The next work that he wrote is probably his greatest work: "The Dream of Gerontius" (1900). It is an oratorio. Gerontius is an old man who is dying and thinking about whether God will punish him for his sins or save him and take him to heaven. Elgar wrote two other oratorios: "The Apostles" and "The Kingdom". He wrote two symphonies, a violin concerto, a cello concerto, Introduction and Allegro for Strings, Sea Pictures (five songs for mezzo soprano and orchestra) and chamber music including a violin sonata, a string quartet and a piano quintet.