Well how it works for the Raptors is that a player, selected at random each day, picks the pre-game and post-game tunes. Captain Cassius Darrow supervises the draw, and its very conspicuous that only veteran friends of his seem to win it..........

Theres a heavy focus on your typical work-out pump up tunes, with a lot of epic riffs and/or beats to get the players hyped up. The stereo volume must be set to "deafening to anyone who walks near it" for maximum effect. Everyone generally reacts positively to this except for a few of the rookies, who wonder when its gonna be their turn to pick the tunes.......

As for Nick Brain, well, lets see what shuffle on the ol' iPhone playlist gives us:

https://www.youtube.com/watch?v=F3tMLFR8bes - The Offspring - Nitro(Youth Energy)
-One of Nick's fav movies is Varsity Blues. Why? Iunno, probably cause athletes across sports can relate to the plot and could apply it to each sport.

https://www.youtube.com/watch?v=9Irs8buVaZo - Janus Stark - Every Little Thing Counts
-See above

https://www.youtube.com/watch?v=pHlhcqctS9Y - Super Street Fighter IV OST - Volcanic Rim Theme
-When he isn't using his work ethic to become a better hockey player or cooking good food for his teammates, Nick's playing video games, and Street Fighter is amongst the favorites. This of course is a quality pump up tune.

https://www.youtube.com/watch?v=AUdST7WZHlg - Apocalyptica - Grace
-If its good enough for an EA Sports soundtrack, its good enough for absolutely nothing cause EA sucks. Wait never mind, this song is pretty good.

https://www.youtube.com/watch?v=np8GaFHD9Lg - Aces High - Iron Maiden
-Iron Maiden is a solid name for a band and a deathtrap and this is one of their better songs.

A pretty eclectic collection of tunes, but hey, he hit shuffle, what are ya gonna do? In the unlikely event Nick won the draw, maybe these would be the tunes the Raptors hear before they blow out their next opponent?