It's very exciting to have Melodia mentioned in the context of this popular course by two leading members of the audio processing community!
Since its release in 2012, Melodia has been downloaded almost 7000 times by researchers, educators, artists and hobbyists. Here's a list of scientific works citing the article describing the algorithm.
Disclosure: Prof. Xavier Serra was the co-supervisor of my PhD thesis together with Dr. Emilia Gómez.