About a week or two ago I realized that Love Live's school idol music NEVER uses the diminished chord out of the seven diatonic chords in a key.
In major keys, the diatonic chords are:
I / ii / iii / IV / V / vi / viio
And in minor keys:
i / iio / III / iv / v / VI / VII
But the thing here is, that neither the viio chord in major keys nor the iio in minor is used in Love Live's music. In minor keys, sometimes even that v chord is used. Love Live tends to use both major and minor keys, and uses all of the diatonic chords EXCEPT for the viio and iio.
For example, in this song in D minor, I hear:
Dm, F, Gm, A, Bb, C (i, III, iv, V, VI, VII)
But I cannot find Edim (iio) ANYWHERE in the song.
Also in Aishiteru Banzai,, you could definitely see E, F#m, G#m, A, B, C#m, but there is no D#dim AT ALL.
Now I am curious about is there a particular reason why Love Live does not use the diminished diatonic chord. Will my question be on-topic if I post it on A&M?