Trap nation and Trap city playlists on youtube. I tried the whole classical music thing, and though i have a huge appreciation for the genre, combining it with CPA material put me straight to sleep. Trap and trance mixes have more energy and few/no words to distract. After i started getting bored of that, I transitioned into full concert videos from various EDM festivals – Ultra, Tomorrowland, Etc. Lots of energy to keep you awake and concentrating.
In all honesty, I should really sent the Swedish House Mafia a thank you gift, because they are truly what got me through Far and Reg.
On another note, I'd recommend the same stuff for the long days in busy season also if you have the ability to listen to stuff on your own headphones. In this context i found words in the music didn't bother me or screw up my concentration, so i would also recommend concert videos from old metal bands. I should also send Metallica and Slayer a thank you gift for getting me through last busy season.