Good story, interesting melody/rhythm and good harmonizing possibilities (Flowers of Bermuda has it all!!) I also oike those modal tunes

I think that one thing that makes a song musically interesting to me, which I had not noticed until it was pointed out to me by my concert pianist husband who knows how to name such tings, is the movement in base line and chord structure. There are dance tunes which do not thrill me until I hear them played with an accompanying pianist/guitariist who does interesting things with the chords, then they grab me.