== == Hardcore Dance music is called Hardcore because just like every genre of music you just call it hardcore instead of the hardcore plus the name of the genre (i.e. metal hardcore is called hardcore, rap hardcore is called hardcore, and elctronica hardcore is called hardcore)

It is synonymous. Chamber music is the music that is played by a Chamber orchestra.

Chamber Music - Coal Chamber album - was created in 1998.

Emo was actually emotical hardcore, a type of hardcore punk music.

a burial chamber underground, usually in a graveyard or church.