Christopher Clark graphed the peak levels of and RMS levels of three hit songs a year over the past three decades. This image links to a PDF of his full poster, "A Visual History Of Loudness." Christopher Clark hide caption

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The Loudness Wars: Why Music Sounds Worse

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courtesy of Def Jam

The Summer Jam And The Return Of The Single

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Radiohead shocked the music industry by letting fans pay the price they wanted to download In Rainbows. John Shearer/Getty Images hide caption

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'In Rainbows': A Pragmatic Experiment

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2006 And The Death Of Tower Records

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Monique Carboni

Can Afrobeat Musical 'Fela!' Move The Masses?

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courtesy of the artist

YouTube: Online Fame For Everyone

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One of the earliest examples of music blogs' influence was the success of Arcade Fire in 2004. Paul Bergen/Redferns/Getty Images hide caption

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2004: The Year Of The Music Blog

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The Boys Choir of Harlem performs in 2005, in front of Lord & Taylor department store in New York City. Bryan Bedder/Getty Images hide caption

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Boys Choir Of Harlem Officially Disbands

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Beyond Country: Not Your Father's Nashville

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Death Metal In The Operating Room?

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Courtesy of the artist

MySpace: Still The Musician's Friend

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Nashville Reels To A Somber Tune

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'American Idol' And The Making Of A Star

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