When Maroon 5 released their debut, Songs About Jane, in 2002, it was truly novel. Radio was riding out the boy-band explosion, dirgey modern rock was ubiquitous, and hip-hop hadn't quite taken over the mainstream. Fronted by the clean-cut Adam Levine, a suave crooner with a supple voice, the group served up unabashedly tender soft-rock tunes with nods to Stevie Wonder and Michael Jackson. It was a winning formula: They were soon pop mainstays, ramping up the allure of their agile jams with racy lyrics, a shot of electro-funk, overt nods to Prince, and, of course, “Moves Like Jagger.”