Pop-punk (also known as punk-pop) is a rock music genre that combines the textures and fast tempos of punk rock with the melodies and chord progressions of pop rock and power pop. It is defined for its emphasis on traditional pop songcraft and adolescent themes, and is distinguished from other punk-variant genres by drawing more heavily from 1960s pop rock and the music of bands such as the Beatles, the Kinks, and the Beach Boys. Pop-punk has evolved throughout its history, absorbing elements from new wave, college rock, ska, rap, emo, and boy bands, and is sometimes viewed interchangeably with power pop and skate punk. The genre emerged in the late 1970s with groups such as the Ramones, the Undertones, Buzzcocks, Bad Religion, and the Descendents, followed in the 1980s and early 1990s by a host of bands signed to Lookout! Records, including Screeching Weasel, the Queers, and the Mr. T Experience. In the mid-to-late 1990s, pop-punk reached widespread popularity with bands like Green Day, the Offspring and Blink-182. The genre was further popularized by the Warped Tour. After the 2000s, pop-punk acts were largely indistinguishable from artists tagged as "emo", to the extent that emo crossover acts such as Fall Out Boy and Paramore popularized a punk-pop style dubbed emo pop. By the 2010s, pop-punk's mainstream popularity had waned, with rock bands and guitar-centric music becoming rare on dance-focused pop radio.