4. Maroon 5, 'V'
Since their 2002 debut, the pop-rock stylings of Maroon 5 have increasingly become more pop than rock (on V, Sia, Ryan Tedder and Rodney "Darkchild" Jenkins all add exciting layers) and the band's ability to make catchy singles has increasingly become more nuanced and effortless. V is the sound of a band fully relaxing into their position as the Top 40's house band, with "Maps" and "Animals" ruling the summer with addicting choruses and electropop-tinged energy. B.S.