Something I've seen circulating around the Internet is the idea of character theme songs, the concept of what song defines a character. I'd like to try this with MLP, and I invite you to do the same.
Choose whatever characters you'd like and explain if you'd like to.
Mine are:
Twilight Sparkle- Fight Song by Rachel Platten. (Twilight's determination and strong will fit perfectly with this song.)
Fluttershy- Roar by Katy Perry. (Fluttershy's character development matches that of these lyrics.)
Applejack- Cotton Eyed Joe by Rednex. (Okay, this one's sort of a joke.)
Rainbow Dash- Hero by Skillet. (Rainbow Dash repersents the hero this person needs in this song. Plus, the tone fits with Rainbow's persona.)
Rarity- Fashion by Lady Gaga. (Sorry! This one's kind of a joke, too.)
Pinkie Pie- Pity Party by Melanie Martinez. (This son captures Pinkie's insecurities. And this song is basically the events of "Party of One".)
Apple Bloom- When Will My Life Begin? by Mandy Moore. (This sing was basically the Crusaders phase until
Sweetie Belle- Perfect by P!nk. (This is Rarity's message to Sweetie, especially in the later seasons. I'm pretty sure this is how Rarity felt after the events of "Sisterhooves Social".)
Scootalo- Breakaway by Kelly Clarkson. (I don't know really. This song just reminds me of her.)
Princess Celestia- Age of Aquarius by The 5th Dimension. (Hear the lyrics. That' all I have to say.)
Princess Luna- Whispers in the Dark by Skillet. (Pretty self explanatory, but I'll explain it if asked.)
Princess Cadance- Love Me Like You Do by Ellie Goulding. (Couldn't find any really good ones for her, this'll do, I guess.)