Swan Lake, Pyotr Ilyich Tchaikovsky. Tchaikovsky is probably my favorite composer in the "classical" genre. I've been listening to the Royal Philharmonic Orchestra's version of Swan Lake just because it's on Spotify.
Joe Hisaishi's Budokan concert is great. It's a medley of pieces he's composed for Studio Ghibli films. Fantastic.
Fall Out Boy. They have a new album: American Beauty/American Psycho. But I just play their entire discography on Spotify. They're the kind of music that just pumps you up.
Like rap music! I usually listen to Eminem before taking an exam. But while working, happy rap like Scott & Brendo's stuff is cool.