You dont feel inherently spiritual during the first 3 or 4 songs at a wedding? Those high energy numbers with the power chords and the blaring horn lines? I always laugh though during the start of the second dance set when I start singing a song in my head about a traveler from Australia.
Most songs you would sing at a Kumzitz are written in a minor key. That’s a songwritting trick to “tug at the heartstrings”
We associate minor chords and minor key melodies with sad/somber/emotional moments and feelings. So you could write a song with the happiest most joyful pasuk in the Torah and put it in a minor key and it would sound at home at a kumzits.