 While appearing only as featured solo instruments in some works, for example Maurice Ravel's orchestration of Modest Mussorgsky's "Pictures at an Exhibition" and Sergei Rachmaninoff's "Symphonic Dances", the saxophone is included in other works such as Sergei Prokofiev's Romeo and Juliet Suites 1 and 2 and many other works as a member of the orchestral ensemble.In some compositions such as Ravel's "Boléro", two or more saxophones of different sizes are used to create an entire section like the other sections of the orchestra.The euphonium is featured in a few late Romantic and 20th century works, usually playing parts marked "tenor tuba", including Gustav Holst's "The Planets", and Richard Strauss's "Ein Heldenleben".