WELL! I have a FPS playlist which contains pretty much nothing but hardcore cos I'm cool like that.
As for favourite bands and songs well there is so many, so I'll do my top 5 FPS bands.
Parkway Drive - Gimme A D, Swallowing Razorblades - To start they are both in my top 10 parkway songs, Gimme A D is really fast and heavy gets you pumped and blasting rounds off left right and center taking down, for Swallowing Razorblades, its just heavy like epically heavy and has one of my favourite lines ever in it.
Confession - She's Not What She Seems, Pump Up The Jams - Confession are just really heavy melodic hardcore that suits FPS so well.
Wings of Icarus - Shinigami, Whatever Winds May Come... - Shinigami is really heavy and fast, and Whatever Winds May Come... is my favourite song atm.
Asking Alexandria - Alerion, A Single Moment Of Sincerity - Asking Alexandria have an epic mix of really heavy breakdowns with a touch of electro which suits FPS.
Hand of Mercy - GTFO, You Sold Me Out - Hand of Mercy songs are just full of hate, and they are quite heavy and fast.
So yeah pretty much and heavy fast music does it for me