Exam ple 2 Diminished extensions
b oe Our next example develops our three-note Diminished 8 triad into a four-note
b b oe C 9 Caug 7th chord. This generally goes in one of two ways: oeoe the Half-diminishedoe
10 10 10 oeoe chord (R b3 b5 b7)’ sometimes referred to a ‘minor 7b5’, or the Diminished 7th (R b3 b5 bb7). A confusingΣΣ thing here is that some players call this just ‘Diminished’, making no distinction between the three-note triadic version and 9 the four-note 7th development.8 It’s goodoe to aim for accuracy7 and Cdim7 b oe˙˙˙˙˙˙˙˙˙˙oeb oe bb ˙˙b oe Cm 8 Cdim7 8 precision when labelling chords but in practice often corners get cut, rather
10 Ó 10 oeoeb oe ˙˙˙˙ 10 10 oeb oe 10Ó like grammatical rules that get relaxed in the spoken word. For our purposes we’ll use the correct titles of ‘Diminished’ for triad and ‘Diminished 7th’ (or the symbol ‘o’) to indicate the four-note version.