"The Wrecking Crew" refers to a group of highly skilled session musicians in the 1960s and 1970s who played on numerous hit records in the Los Angeles music scene. They contributed to the sound of many famous artists, including The Beach Boys, Frank Sinatra, and The Mamas and the Papas, often without receiving public recognition. This collective of musicians was known for their versatility and ability to adapt to various musical styles. Their work helped shape the sound of popular music during that era, making them an essential part of the recording industry, even though they often remained behind the scenes.