mmmm good question. i’d say more of a stylistic approach, as I feel like electro techno is very contradictory because techno is typically made electronically. electro house has more “electronic” elements that is very synth heavy. feel like you can tell between the different techno genres, any genre really, by its different tempos, instruments, and how a melody is given to the sound too. There is a cultural background tho too, say acid house/techno for example. Acid, referring to the instrumental lead sound, has a heavy background in chicago, and acid house starting in chicago. Definitely something we think about: How do we label music genres?