After honing their pop instincts as the Los Angeles band Kara's Flowers, Maroon 5 became experts at pairing mega-selling singles with hooky album tracks that anticipate oncoming trends. The flinty “Feelings” and the crunchy “Stutter” combine grooves with hip-shaking attitude, while frontman Adam Levine's collaborations with Kanye West and Gym Class Heroes show off his falsetto's sweeter side.