New York University
Music Literature: The Classical Period
Resource provides information on the Classical Period in music by discussing the three main composers most notably associated with that period: Haydn, Beethoven, and Mozart.
Other
Classical (Period) Music
A nice website discussing music of the classical period. It provides detail into the style of classical music, lists some of the composers associated with classical music.
Other
Queen's University (Belfast): Bach Bibliography
A searchable database containing 21,000 reference records to the life and work of composer Johann Sebastian Bach (1685-1750). Provides a comprehensive roundup of publications about the composer/musican of interest to Bach scholars and...
Northern Arizona University
Northern Arizona Univ.: Symmetrical Binary Principle
This site from the Northern Arizona University contains the meanings of the symmetrical binary principle in Bach's music and several other composers of this period.
Teacher Planet
Teacher Planet: Mozart
Several lessons, units, and featured website links for learning about Mozart geared to elementary grades (includes worksheet PDF printouts).