You might also like the Yanno chord extractor, with super-academic-looking but quite easy to use UI here: http://yanno.eecs.qmul.ac.uk http://yanno.eecs.qmul.ac

You might also like the Yanno chord extractor, with super-academic-looking but quite easy to use UI here: http://yanno.eecs.qmul.ac.uk http://yanno.eecs.qmul.ac.uk If I remember aright, both Chordify and Yanno use NNLS Chroma for the feature extractor but they use different methods to segment and label the chords. (Yanno uses Chordino which you can find at http://isophonics.net/nnls-chroma http://isophonics.net/nnls-chroma with the NNLS Chroma plugin.)