Hard Rock

Blues riffs, distorted guitars and heavy drums push rock from short songs toward the stadium.

Related

ContemporaryTimbreElectric guitarDrum Kit

Hard rock enlarges the blues band, with louder guitars, heavier drums and longer instrumental passages.

Origins and era

In the mid-1960s British and American groups pushed electric blues to greater volume. Around 1969 Led Zeppelin, Deep Purple and Black Sabbath fixed the heavy accents, distortion and long solos, and hard rock became the base of stadium rock.

What you hear

Listen for the riff. Guitar writes short phrases from the minor pentatonic and power chords, repeating them until they stick. Drums hit harder than in pop rock, snare bright and kick busy, while bass locks to the root. The singer often shouts in a high register, and solos run longer than in punk. Tempos are medium-fast, with occasional half-time, and sections are separated by volume and colour.

Key figures

Led Zeppelin set folk beside blues, Deep Purple added organ and classical motives, and Black Sabbath made distortion slower and lower. AC/DC reduced the riff to a formula, while Free and Thin Lizzy kept a bluesier version.

Lineage

Electric blues, British beat and psychedelic rock feed in; heavy metal, grunge and stadium rock come out. It also fixed the live shape of album rock.

Common misunderstandings

Hard rock is not heavy metal, since it keeps a blues skeleton while metal turns darker. Nor is it only volume; riff design and drum space matter as much. Hearing it as a loudness contest misses the blues syntax it borrows.

Sources

• Keith Shadwick, Led Zeppelin（Backbeat Books, 2005），用于核对乐队年代与 1970 年代场景
• The New Grove Dictionary of Music and Musicians, 2nd ed., entry Hard Rock，用于交叉核对风格特征与谱系

Used for fact-checking only; all prose is original.