In this epic overview, Michael Tilson Thomas traces the development of classical music through the development of written notation, the record, and the re-mix.

This week, researchers reveal the single most important influence on music since 1960. Also, turns out that sleepwalking and sleep terrors are genetically linked.

Wolfgang Amadeus Mozart's "Die Zauberflote" ("The Magic Flute") is widely regarded as one of the most influential operas in history. And while it may seem like a childish fairytale at first glance, it's actually full of subversive...

Whether your favorite band is One Direction or Slayer, you can probably tell tense chords from relaxed ones, but what exactly gives them those qualities?

Once you've got simple major and minor chords under your fingers, 7th barre chords are the next stage to make your playing sound more professional. Stuart Ryan shows you the relevance of the major 7, minor 7 and dominant 7 chords.

Howcast - Learn how to get started playing the harmonica with this Howcast harmonica lesson taught by John Popper of Blues Traveler.

Howcast - Learn how to write a bass line on the bass guitar from musician John Sutton in this online guitar lesson from Howcast.

Howcast - Learn how to understand bass chord patterns from musician John Sutton in this online guitar lesson from Howcast.

Howcast - Learn how to play "God Rest Ye Merry Gentlemen" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Good King Wenceslas" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Jolly Old St. Nicholas" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "O Come, O Come Emmanuel" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "The Wassail Song" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "What Child Is This?" aka "Greensleeves" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "O Little Town of Bethlehem" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "O Come, All Ye Faithful" aka "Adeste Fideles" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Deck the Halls" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Auld Lang Syne" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Angels We Have Heard On High" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "12 Days of Christmas" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Hark! The Herald Angels Sing" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Ding Dong! Merrily on High" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "O Holy Night" on piano from musician Paul Sandberg in this Howcast video.

Howcast - Learn how to play "Silent Night" on piano from musician Paul Sandberg in this Howcast video.