weird Db7 modal vgm that spontaneously appeared to me

I fw this heavy the motif is mysterious a little dark and not really a tonality you'd expect. until you realize it's just Db7 without a five. but then I add the five but also the flat 6 so it sorta alternates between an augmented chord and a major chord. I just started playing it on the piano and it distracted me from what I was doing cause it was so just. interesting.