The difference, by ear
AC/DC sit on the line, and the distinction is swing - boogie keeps the shuffle where hard rock straightens it into a riff.
Both are sung cleanly, but hard rock is a little slower: 100 to 140 bpm against 120 to 160. To hear the difference, play Status Quo next to Led Zeppelin. Both grew out of blues rock, hard rock first and boogie rock two years after. United States appears in the origins of both.
In figures
Boogie rock
Where it sits
Rock › Blues rock › Boogie rock
In short
One shuffle riff held until exhaustion. Simple by design and impossible to sit still to.
How it sounds
- A shuffle rhythm in dotted eighths, held identically from start to finish.
- A short guitar riff in open position, with no modulation.
- No pretensions whatsoever: the songs exist to be played live.
Key acts
- Status Quo
- Canned Heat
- AC/DC
Start here
The pickAC/DC - Riff Raff. Boogie rock at melting point.
Full page →Hard rock
Where it sits
Rock › Blues rock › Hard rock
In short
Louder volume, thicker riffs, vocals pushed to the edge. Heavy metal splits off from it, but hard rock stays closer to the blues and to the chorus.
How it sounds
- Riffs built on power chords, with palm muting and constant distortion.
- Vocals pushed into the high register, often right at the edge of a rasp.
- A heavy rhythm section that still grooves - the bass stays melodic rather than doubling the guitar.
Key acts
- Led Zeppelin
- Deep Purple
- AC/DC
- Guns N' Roses
Start here
The pickDeep Purple - Machine Head. Six songs, all essential.
Full page →