Rock ’n’ Roll developed in North America from a fusion of different types of music from the black and white communities. Rhythm & blues, jazz, black and white gospel, and country & western music all went into the mix in varying amounts depending on the artist. In the 1950s, as teenagers emerged as a distinct social group, rock and roll became their music - the first time that a musical movement was aimed specifically at adolescents. The songs were often about teenage angst, from the Everly Brothers’ Bye Bye Love to Elvis Presley’s Heartbreak Hotel. The older generation thought the music over-sexual and anti-social, but the tide was unstoppable.