Bass Pedal And Additional Chord Variations
If one bass note is repeated while the chords over that bass note are changing than this effect is referred as a bass pedal, e.g., Bb/C, Ab/C, G/C.
Example 154 uses various major chords over the same bass note Bass pedal C.
So far the interval of the major seventh has only been used in conjunction with the major chord, however the major seventh is occasionally used in combination with the other three basic chords which adds an interesting color to the sound.
E.g., min maj7 Formula 1 b3 5 7
dim maj7 Formula 1 b3 b5 7
aug maj7 Formula 1 3 #5 7
Another frequently used sound variation is combining a chord over a single bass note which may or may not be part of the actual chord itself, e.g., C/B, in this example the bass note could be seen as part of the chord even if it is not indicated in the chord itself. The note B is the major seventh of the C major chord. When written as just described, it is referred to as the 3rd inversion of the Cmaj7 chord.
Remember that the most important thing for a bass player in a situation such as this is to play the note under the slash regardless of whether the note is part of the chord or not.
