Answer: Four
The four musical groupings in a typical symphony orchestra are the woodwinds, brass, percussion and strings.

Answer: The Doors
Jim Morrison lead the Doors from 1965 until his untimely death in 1971 at the young age of 27.

Answer: 8
The history of classical music is filled with virtuosos and geniuses but none perhaps moreso than Mozart. For instance, he wrote his "Symphony No. 1" at eight years old. Also, during his relatively short life (1756-1791), he composed in excess of 600 pieces - many more than some other great composers who lived much longer.

Answer: 1859
In 1859 the Russian Musical Society, founded by Grand Duchess Elena Pavlovna and Anton Rubinstein, became the first of such institutions in Russia that was accessible by the general public. The school was disbanded in the early 20th century folloiwng the Russian Revolution but reincarnated in 2010 when the All-Russian Music Society renamed itself the Russian Music Society.

Answer: Gustav Mahler
According to legend, when famed Austro-Bohemian composer Gustav Mahler passed away on 18 May 1911 in Vienna, one of the very last (if not last) words recorded from his lips was "Mozart", with the works of Mozart being highly influential in the development of his career.

Answer: Paul McCartney
The globally-popular Paul McCartney closed out the opening ceremony of the 2012 Summer Olympics, reportedly only collecting $1.57 for his services.

Answer: Emanuel Schikaneder
"The Magic Flute" is perhaps Mozart's best known work, and the libretto to the opera was written by Emanuel Schikander (1751-1812), a highly-recognized musician for his era.

Answer: Sleeping Beauty
The Walt Disney Company derived some of the music for its 1959 animated classic "Sleeping Beauty" from the equally notable "the Sleeping Beauty", a ballet written by Pyotr Tchaikovsky (1840-1893) that was first performed in 1890.

Answer: Claude Debussy
Charles-Camille Saint-Saëns had a real tiff with Claude Debussy - which culminated in him successfully petitioning to deny Debussy admission into the Institut de France - seemingly not due to any personal beef but rather a dislike of Debussy's musical style and younger composers in general.

Answer: Plain White T's
The Plain White T's sang the hit song "Hey There Delilah". This song reached Number 1 on the Billboard Hot 100 in 2007.