»Enka« is a traditional Japanese music genre. It is inherited from the colonial time of Taiwan occupied by the Japanese from 1895 to 1945. A lot of Japanese traditions were integrated into Taiwan during that period.

The note »Re« does not correspond to a fixed pitch with a specific, precise sonic frequency.  Instead of adhering to a rigid standardisation of tonality, the notes, in Hengchun Melody for instance, are relational and fluid. Their value is determined by the notes that precede and follow them, as well as the environment that the musician is situated within – a form of dynamic tonality and a relational scale that resonates with the performer's immediate feelings at the moment of its delivery.