Music that does not have a recognizable key center, which does not make use of common-practice, consonant chords in recognizable chord progressions, and which does not follow the common practice of cadence and resolution

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25
votes
8answers
2k views

Is it possible to write a song without a key?

"This song is in F Major", "That song is in A Minor", "This song is in D Minor, but modulates to F Major in the middle", etc. Can we say "This song has no key"? Are there songs that have/follow no ...
17
votes
3answers
580 views

Are there any MIDI extensions that allow quarter tones?

It'd be nice to be able to use MIDI for more diverse music than just that based on western scales. Are there any MIDI extensions that support quater tones, or other sub-semi-tone pitch divisions? I ...
13
votes
4answers
765 views

What is an atonal mode?

I got an album by Ornette Coleman and Pat Methany, "X", and on the linear notes it talks about atonal experiments within the song structures. Are there scales and chord progressions that go along with ...
5
votes
2answers
93 views

Error computing prime form of a pitch class set

I'm working on coming up with prime forms. I've been using this calculator online to check my work. My problem is that the prime form I compute for a certain PCS doesn't agree with the calculator, ...