Imagine Dragons make alternative megahits with Britpop sheen at a dizzying rate, flying on the strength of frontman Dan Reynolds' soulful vocals. If you're into that bigger-is-better aesthetic—uplifting, shoot-for-the-stars choruses bursting out of impassioned, synth-heavy bangers—their peers don't disappoint. Scream your heart out to these youthful pop anthems tailor-made for the arena.