I saw that.
It was really good.
I had no idea all that great music I loved was played by the SAME people!
This isn’t the documentary itself, but rather an informed discussion about it...
THE WRECKING CREW - Documentary on West Coast Sound Studio Musicians
https://www.youtube.com/watch?v=xyl_j7ziZeY
“The Wrecking Crew” was a nickname coined by drummer Hal Blaine for a collective of studio and session musicians that played anonymously on many records in Los Angeles, California during the 1960s. The crew backed dozens of popular singers, and were one of the most successful groups of studio musicians in music history.[1][2] They were occasionally featured on productions by Phil Spector under the name the Phil Spector Wall of Sound Orchestra.[3] Other names such as “the Clique” and “the First Call Gang” have been attributed to the band.
Two of their members, drummers Hal Blaine and Earl Palmer, were among the inaugural “sidemen” inductees to the Rock and Roll Hall of Fame in 2000, while the entire Wrecking Crew was inducted into the Musicians Hall of Fame in 2007.[4][5][6] In 2008, they were the subject of the documentary of the same name.
Lots more at link
https://en.wikipedia.org/wiki/The_Wrecking_Crew_%28music%29