try playing a Dominant 7 chord and hammering on to the 13 mid chord for some melodic movement inside the chord. This voicing of a Major 7 chord has a slightly different feel to a conventional Major 7 ...

The guitar in question is a Schecter Hellraiser ... The result is that the notes that move Doomguy around are mostly in an A-major bar chord formation, with some controls up in the solo range ...

Harmonic minor keys are used when writing chords. There is another version of ... Each key signature has two possible keys. The major key and the minor key, which will begin on a different note.