I was introduced to this blurry genre by an emo ex-boyfriend. I'm not currently certain about the in-community definition of this genre—which I really ought to look into, so it's a bit of a mess. Screamo to me does mean something specific which I associate the most with Pierce The Veil, but given the way I group my music, "Screamo" can mean anything from softer pop-punk to HXC. I did start with Pierce The Veil so it's not a suprise it's probably my all-time favorite; My favorite song(s) is/are probably May These Noises Startle You In Your Sleep Tonight + Hell Above.