Alexander Kok
Alexander "Bobby" Kok was a cellist, a successful session musician and a founder member of the Philharmonia Orchestra.
Bobby Kok was perhaps best known for working with The Beatles on many of their songs; being a particular favourite of their producer George Martin. He played cello on some of The Beatles' biggest hits, including "Hey Jude", and "Yesterday".
The violinist Felix Kok was his brother.