Two of the most common keys for playing guitar songs are C and G.

Left hand side of the diagram: C

Right hand side: G

The chord examples are in bar lines. Play 4 strums for each bar.

Example 1: common chord sequence (easy) Line 1, 8 bars long

Ex.2: harmonised scale chords in this key - 3 major, 3 minor,1 m7b5 chord. Line 2, 8 Bars long

Ex.3: connecting the chords with a descending bassline. The chord is given first, then bass note. So G/D would be G with a D bassnote.

The major scale, or part of it, is shown for each key at the end.

The non-diatonic chord is one you'll often find added to songs in this key.

Most ballad -type songs from the world of rock and pop can be played with these chords. Learning them together should dramatically speed up the learning process for all songs.

Let's try an analogy from the building trade. If we forget all the chord names and think about chords as bricks - maybe coloured bricks, it doesn't cost any more. All songs will use the same 7 bricks, we just don't know the order that they will be used in. But knowing what to expect means we understand the construction quite well, even if a few non-standard bricks get added.

Aspects of the theory are explained in my other guitar hubs, or you can ask questions through the comments box anytime.

Descending bassline: this is a good way to connect chords, and generally improve a solid guitar part when accompanying vocals. Use notes from the major scale to bridge any gaps between chords. This works in reverse too, as you can step up the major scale notes between chords - very common in country and bluegrass styles. Going from C to F you could play the single notes D and E to smoothly connect the chords.

A great example of connecting basslines - in Shoot the Moon ( Norah Jones) and also America (Simon and Garfunkel)

Looking for chord charts? chordie.com is a good source.

Try using a capo, as it will brighten up the tone of acoustics, and also make it much easier to reach the bassline notes. Example: Don't Think Twice, it's Alright, She Belongs to Me (Dylan)

The relationship between the I chord and the V chord is always important. 90% of the time, or even more than that, a G7 chord will lead to a C chord, or possibly a C minor chord if we're in a minor key.

In the same way, A7 will lead to D or Dm

B7 will lead to E or Em,

E7 will lead to A or Am,

D7 will lead to G or Gm.

When you understand this it will help you predict the next chord in a song, which is really useful.