Rock concert that fused country music, blues, and swing genre to produce the earliest examples of "rock and roll." The coining of the phrase, "rock and roll," is often attributed to American, Alan Freed, a disk jockey and concert promoter who organized many of the first major rock concerts. Since then, the rock concert has become a staple of entertainment not only in the United States, but around the world. The term 'rock concert' is also occasionally used to refer to live performances by distinctly non-rock acts. Live performances by pop, hip-hop, and R&B bands may not be rock concerts in the
Rock and roll backbeat, that are now more commonly called simply "rock music" or "rock". The term "rock and roll" now has at least two different meanings, both in common usage. The "American Heritage Dictionary" and the "Merriam-Webster Dictionary" both define rock and roll as synonymous with rock music. "Encyclopædia Britannica", on the other hand, regards it as the music that originated in the mid-1950s and later developed "into the more encompassing international style known as rock music". The phrase "rocking and rolling" originally described the movement of a ship on the ocean, but was used by the early twentieth century, both to