A friend asked me to answer this question: What is the full professional name of the person who wrote and sang "Octopus's Garden"?, using the article: Sir Richard Starkey  (born 7 July 1940), known professionally as Ringo Starr, is an English musician, singer, songwriter and actor who gained worldwide fame as the drummer for the Beatles. He occasionally sang lead vocals with the group, usually for one song on each album, including "With a Little Help from My Friends", "Yellow Submarine", "Good Night", and their cover of "Act Naturally". He also wrote and sang the Beatles' songs "Don't Pass Me By" and "Octopus's Garden", and is credited as a co-writer of others, including "What Goes On" and "Flying". Starr was afflicted by life-threatening illnesses during childhood, and he fell behind in school as a result of prolonged hospitalisations. He briefly held a position with British Rail before securing an apprenticeship at a Liverpool equipment manufacturer. Soon afterwards, he became interested in the UK skiffle craze and developed a fervent admiration for the genre. In 1957, he co-founded his first band, the Eddie Clayton Skiffle Group, which earned several prestigious local bookings before the fad succumbed to American rock and roll by early 1958. When the Beatles formed in 1960, Starr was a member of another Liverpool group, Rory Storm and the Hurricanes. After achieving moderate success in the UK and Hamburg, he quit the Hurricanes and joined the Beatles in August 1962, replacing Pete Best. Starr played key roles in the Beatles' films and appeared in numerous others. After the band's break-up in 1970, he released several successful singles including the US number-four hit "It Don't Come Easy", and number ones "Photograph" and "You're Sixteen". In 1972, he released his most successful UK single, "Back Off Boogaloo", which peaked at number two. He achieved commercial and critical success with his 1973 album Ringo, which was a top-ten release in both the UK and the US. He has featured in a number of documentaries and hosted television shows.  He also narrated the first two series of the children's television programme Thomas & Friends and portrayed "Mr..., what would be the answer ?
The answer to this question is:
Ringo Starr