Music appreciation can take many forms, and certainly gaining a basic understanding of how music is composed and subsequently analyzed and performed can provide years of enjoyment and edification. With his website, Teoria, Jose Rodriguez Alvira offers visitors the opportunity to take online tutorials, complete exercises, and read articles about music all in the same place. In the “Tutorials” area, visitors will learn about how to read music and how to identify different chords, intervals, and harmonic functions. Moving along, the “Exercises” area lets visitors test their mettle with interactive materials that will take them through the world of key signatures, jazz, and clef reading. Finally, the site also has a “Reference” area which provides answers to such questions as “What is a chord?” along with offering a detailed explication of the bits and pieces of information that can be found in a bar of music.