Other
Ruby Cliff Computing: Learn Guitar Theory With Virtualoso Guitar
This is a fantastic site that teaches basic music reading, especially as related to the guitar. Although the site is a promotional software site, the trial version is excellent by itself.
Other
Mml: Notation Module: Clef
Although very simple in its design, this short piece gives a nice overview of musical terms, one of which is the treble clef. The author briefly discusses the attribute of "key" in conjunction with the clef.
PBS
Pbs: American Masters: Leonard Bernstein
A brief biography of American composer Leonard Bernstein is presented here. Read the highlights of his career and contributions to music.
Lumen Learning
Lumen: American Romanticism: "The Raven" by Edgar Allan Poe
This is the text and audio of the poem "The Raven" by Edgar Allan Poe, a narrative poem first published in January 1845, and is often noted for its musicality, stylized language, and supernatural atmosphere.