i aint play this
Member
It's quite self-explanatory, come on. Metallica is a very popular band, so many people are likely to get in touch with Metallica's music. Once someone gets into it, he/she might get tempted to dig deeper into heavy/heavier more obscure music and discover other bands he/she might not have discovered if he/she hadn't gotten into heavy music through Metallica first. Hence, Metallica was his/her gateway band.
Capiche?
Of course I know all of that, I'm not stupid (not saying you called me stupid, no hard feelings) but what I tried to say is that people usually this term with a negative connotation, meaning it's a band for beginners and I think it's bullshit. You didn't really understand what I tried to say.