SCORE INCLUDED
My customers were clamoring for more heavily "complexified" Justin Bieber charts, so I've once again turned to Dirty Loops for inspiration! This is an adaptation for vocal jazz ensemble of the Swedish fusion power trio's arrangement of the massive radio hit. Of course it's got crazy rhythms and harmony, and the Part Tracks will help your singers with those elements. From here, I can quote the description from "Roller Coaster"...The bass line from the original transcribed, so your bass player can grab as much of it as they'd like to shed, and they'll have chord changes as well, to play their own figures when they like. Drum part has a lot of hits, keyboard part is detailed, as well, with a few moments of chords and slashes, but also a transcription of DL's keyboard solo. Your students will love you for programming this chart (this statement is not guaranteed, prices may vary, see stores for details). 
Fully notated piano/keyboard and bass, bass with both transcribed Dirty Loops version and adapted relatively simpler version, drums