Counterpoint
Parallel Fifths and Octaves: Why the Rule Exists
Parallel fifths and octaves are voices that move together and keep a perfect interval. Here is why strict voice leading forbids them and where the rule bends.
The archive
100 pieces on how music is built and how it is written down — with playable examples, tables you can check, and no filler.
♮ intro · ♯♯ intermediate · ♯♯♯♯ advanced — like key signatures, more marks means more to hold in mind
Counterpoint
Parallel fifths and octaves are voices that move together and keep a perfect interval. Here is why strict voice leading forbids them and where the rule bends.
Counterpoint
Strict and free canon, interval and time distance, inversion and crab canons: how canons work and how to write a singable one.
Counterpoint
Species counterpoint isolates one compositional decision at a time. First species isolates the hardest one: how to make two voices sound like two voices.

The ebook
The site's working library as a structured ebook: intervals, keys, harmony, counterpoint, rhythm, form, tuning, orchestration and the history behind them.
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