One of the most intriguing ways to sing a song with other people (and I don’t think I say this just because my mother is a teacher of music teachers) is the canon, which starts the same melodic figure at different times to create harmonies. Sound complicated? It’s not, really — you probably already know a type of canon called the “round,” which includes exact repeats of melodies that sound good, time-shifted against each other — think “Row, Row, Row Your Boat.”
At the SXSW Music Hackathon Championship last week, one of our favorite creations was Autocanonizer by Paul Lamere (director of developer platform for The Echo Nest, publisher of Evolver.fm). It analyzes any song you upload, looking for segments that would harmonize well with each other…then plays them at the same time.
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