Palm mute


The palm mute is a playing technique for guitar and bass guitar, executed by placing the side of the picking hand below the little finger across the strings to be plucked, very close to the bridge, and then plucking the strings while the damping is in effect. This produces a muted sound. The name is a slight misnomer, as the muting is performed by the side of the hand, not the palm.
Palm muting is a standard technique used in classical guitar performance and by electric guitarists who play with a pick. Palm muting is so widely used as to be idiomatic in heavy metal, and particularly in thrash, speed and death metal, but it is often found in any style of music that features electric guitars with distortion in the signal's preamplification stage. It is responsible for the characteristic "chugging" and "crunch" sound of distorted guitar music. In metal, palm muting makes chords and notes sound shorter and more defined. Palm muting can also be used in conjunction with a wah pedal to produce the distinctive scratching sound often heard in disco music.
Palm-muting is also used by electric bassists in order to obtain a warm, "thumpy" tone that is sometimes similar to that of a finger-picked double bass. The strings may be plucked with the thumb or with a pick, which gives a more percussive tone.

Aspects of performance

There are many ways to perform palm muting, but, generally the following are recognized:
Palm muting is a basis for many other techniques, especially those specific to electric guitars, such as sweep picking or alternate picking.

Notation

In guitar tablature, palm mutes are rendered with a "P.M." or "PM", and a dashed or dotted line for the duration of the phrase to be muted. If the pitches of the muted notes are discernible, the fret numbers are given accordingly, otherwise they are represented with an X in lieu of a tab number.
P.M.------------|
e |------------------|
B |--8-------8-------|
G |--7-------7-------|
D |--6-------6-------|
A |--7-------7-------|
E |----0-0-0---0-0-0-|

Recorded examples

One popular song with palm muting is "Basket Case" by Green Day, where power chords are accented then muted to create a sense of energy and urgency.
> PM--------| > PM-| < PM--| > PM-| < PM- > PM> PM-| < PM--| <
d# |-----------------|-------------------|-----------------|-------------------|
A# |-----------------|-------------------|-----------------|-------------------|
F# |-9---------------|-------------------|-----6-----6-----|-------------------|
C# |-9-9-9-9-9-9-9-9-|-----9-------9-x-x-|-6-6-6-6-6-6---6-|-----6-------6-x-x-|
G# |-7-7-7-7-7-7-7-9-|-9-9-9-9-9-9-9-x-x-|-4-4-4-4-4-4-6-6-|-6-6-6-6-6-6-6-x-x-|
D# |---------------7-|-7-7-7-7-7-7-7-x-x-|-------------4-4-|-4-4-4-4-4-4-4-x-x-|
More aggressive styles of palm muting grew out of thrash metal in the mid-late 1980s with bands such as Metallica, Slayer, Anthrax and Megadeth. The technique was fused with fast alternate picking, under high gain, to create a driving, percussive effect. Other uses of palm muting can be heard in post-punk bands like Gang of Four and Talking Heads, as well as in contemporary musicians such as Isaac Brock of Modest Mouse. Another example would be "Paranoid" by Black Sabbath, which uses palm muting for much of the song.