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What's the best technique to identify the guitar chords of a song?

I know the basic chords and also how to get into the rhythm of a song! But I'll always be spending huge amount of time to identify the chords :(

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Just something quick to add to these amazing and helpful suggestions, I'm working on You by -itis. I figured out after a bit of frustration that their guitarist likes Eb standard tuning. Watch out for things like that, too. –  Mike Jun 15 at 12:25

4 Answers 4

up vote 5 down vote accepted

You can try using chordify. It's not always correct, but in many cases it's a pretty good start.

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AFAIK the OP asked for technique, not a broken piece of software that does badly what your ears can do well. –  Some Dude On The Interwebs Mar 1 at 14:39
@SomeDudeOnTheInterwebs it's not my software, and not my decision to have my answer "accepted". I just gave another option for anyone who wants to use it. –  Malki Mar 1 at 15:25

At a beginner level, the first step is to identify the root note of the chord - this is often (especially in most pop or rock music) the lowest note of the chord, so you should be able to hear and compare with a plucked note on your guitar.

If you can accompany a song just using the root notes then you will have an idea of the chords and the progression through the song.

Identifying whether it is an A minor, A 7th, A sus 4 etc comes more from practice and experience. You learn to hear what each type of chord sounds like and will be able to play along with a version of the chord.

Once you can do that, you are likely to find that although the chords may be right, you may be playing a different fingering than is used on the track. There are many ways to play each chord, not just because you can play in various places on the fretboard, but also because you don't need to have the notes in order, or even play all the notes in a chord, so to accurately play in the style of a particular artist, you need to learn their techniques - they may go for basic powerchords, or like to stretch across a wide range of frets etc.

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Yes, root notes are always a good starting point (although they can sometimes be misleading if you don't listen to all of the notes). –  Some Dude On The Interwebs Mar 1 at 14:40
It also helps if you can figure out the key and know basic music theory. If you know that the root of a chord is C and the key of the song is F major, a C7 can be a good starting guess, since the diatonic C chord in F major is a dominant 7th. From there, if C7 sounds right but not quite what you hear, you can start adding tensions and/or voicing it differently. This is really useful, since you can usually tell by ear when a chord is not diatonic. –  Costagero Mar 2 at 16:20

To find the chords for a song (you mention guitar chords, which will be the same chords, but may have different voicings), first you have to establish what key the song is in. This you do by listening carefully to 1. What the first chord is. 2. What the last chord is. 3. A place in the song where it sounds like it could finish, even if it doesn't,or places where the same 'home chord' comes, often.This chord is most likely to be the key chord.

When you have this, call it chord one. The other two main chords in the song will be four and five. E.g. in G, G being one, C is four and D five.

Assuming it's in a major key, there may be minor chords in the song - six, two and three, often in that order of probability. Most pop songs will have less than all 6, in them. Many songs have only 3 or 4, and some (Achy Breaky Heart, Dance the Night Away) manage with only 2, these being one and five.

As Dr Mayhem suggests, to find a chord, listen to its basic note, and move one fret at a time up the bottom (fat) string of your guitar, until you come to the note that matches that chord. This stands a good chance of being the key chord. Put the radio on, and try this with every song that gets played, you'll be surprised how quickly you improve.

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Aaah, yep to all the above but lets make this a bit easier(?). find a song on youtube (frankly, you can put the name of the song on the internet and search for "(name of song) Chord or TABS" and poof ya got all right there...for free)! If you want to figure it out on your own (just for the fun of it)...then attempt to play along with the music and if you can get the melody--the single notes sang or played (often not too hard) then write down those notes and then search the music keys for those notes (typically if you can find the notes you can find the scale and if you can find the scale you have the key and the scale/key will fit only one set of chords). Let's say you pick off the notes while playing along with the radio and you find you are playing no sharps or flats then that is the "Key of C" and the notes are C,D,E,F,G,A,B and C (the octave). The chords that go along with ANY scale of notes go (in this order): Maj, min, min, Maj, Maj, min, Diminished: SO...the chords in the scale of C are Cmaj, Dmin, Emin, FMaj, GMaj, Amin, and Bdimished. Then it is just a matter of matching the notes to the chord with the note in the melody. Music is not a machine though and though it involves mathematics it is not rigid...this rule always applies: if it sounds good then it is good--others will be sure to let you know!!

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