- A musical genre that includes everytype of music. This is usually a sarcastic response given when some lame scenester asks what type of music you listen to after listing 20+ genres that may or maynot exist.Scenester: Yeah so I listen to gothcore, disco ska, plip hop, darkwave, lightwave, gabber, and science rock. So what kind of music are you into?
Source: Urban Dictionary: music core
What I found after trying to find out what exactly does "Slash Core" mean.