Hello everyone. Over the next several months I plan on sharing with you some of my approaches to playing, writing and arranging music. I'll be discussing some of the concepts that I've gleaned over the years, illustrating them with some well-known-and a few not-so-well-known-musical examples. Let's begin this first lesson by talking about what I've often heard people refer to as the classic Led Zeppelin "stomp groove." A prime example of this can be found in the song "Black Dog," from our fourth album.
As you probably already know, Led Zeppelin was heavily influenced by blues music-Robert Johnson, Howlin' Wolf, Elmore James, Muddy Waters, B.B. King and many others.
I was inspired to write the "Black Dog" riff after learning this old blues riff in E (see Figure 1 above) from the Muddy Waters album Electric Mud (Cadet, 1968). It's a swampy, circular, single-note riff and Jimmy Page and I used to love to play it forever! I wanted to write an original riff that had that same type of busy, yet plodding, feel.
This is what I came up with (see Figure 2 above). Notice the extra beat thrown in at the end of the phrase (the 5/4 bar). It just felt natural to hit the A note an extra time before Robert [Plant] came in again with the vocal.
I then came up with the bridge riff, which is in E (see Figure 3 above). This riff is rather tricky-sounding, as it's built from a repeated phrase that is four-and-a-half beats long. Each time the phrase is repeated it's displaced by half a beat. Notice how the E note, which falls neatly on beat one the first time the phrase is played, falls on the second eighth-note of beat one the second time around, on beat two the third time, and on the second eighth-note of beat two the fourth time. This technique of repeating an odd-length phrase in an even time signature such as 4/4 is known as hemiola and is a very effective compositional tool. When this riff was played against Bonzo's [drummer John Bonham] half-time backbeat and doubled an octave higher on guitar, the result was a very powerful and catchy-sounding "stomp groove." It seems that quite a few bands have picked up on this concept.
Originally, I wrote the bridge riff with different accents that disguised the beat even more (see Figure 4). In the long run, however, playing it this way proved to be too tricky for everyone to hear and perform together without losing track of the beat, so we ended up changing the accent pattern to make the downbeats a little more obvious (see Figure3).
I used a pick for this song to get that growling, trebly tone. Many bass players scoff at the thought of using a plectrum for anything, but I've found it to be quite useful for a lot of things.
For example, during the chorus/solo sections of "Black Dog," I would sometimes strum E5 and D5 power chords (see Figure 5) behind Page's G and D chords, especially when performing live. I really don't think the song would have sounded as punchy and "fat" if I hadn't used a pick. A few years after we recorded this song, I started using an eight-string bass when performing it live. Since every note I played on that bass would be doubled one octave higher, it really helped fill out the middle register. This was particularly effective when Jimmy would go to solo.
Keep in mind that when it comes to creating music, there are no "rules." Look at Led Zeppelin-we broke just about every so-called rule of music and recording that there was, and for the most part, it seemed to have worked to our benefit. The only thing that really matters is that you like what you hear.
Courtesy of Guitar World Online.