He is one of the greatest living musicians and a legend to many - and we're not talking about Kanye West.

Yet Paul McCartney's recent collaboration with the rapper for the newly released single Only One at first appears to have left some hip hop fans scratching their heads.

'Who is Paul Mcartney?, one wrote on Twitter about the Beatles rocker while another posted: 'This Paul McCartney guy gonna be huge.'

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Top team: Kanye West and Paul McCartney teamed up to write Only One, Kanye's recently released single about his daughter North

Yeezy and Macca got together in early 2014 to write the love song devoted to his young daughter with Kim Kardashian, North.

The track - released on Thursday - features the veteran musician playing the keyboard while the Gold Digger star sings from the perspective of his late mother.

The pairing sparked an outpouring of Twitter sarcasm.

I don't know who Paul McCartney is, but Kanye is going to give this man a career w/ this new song!! — OVOJosh (@OVOJosh) January 2, 2015

Kanye has a great ear for talent. This Paul McCartney guy gonna be huge. — Desus Nice (@desusnice) January 1, 2015

who tf is paul mccartney???!??! this is why i love kanye for shining light on unknown artists — :/ (@CurvedDaily) January 2, 2015

@DuesNice remarked: 'Kanye has a great ear for talent. This Paul McCartney guy gonna be huge.'

@percyBlacksom posted: 'Who is Paul McCartney? He boutta blow up thanks to Kanyer!!!'

@CurvedDaily added: 'This is why i love Kanye for shining light on unknown artists.'

And OVOJosh wrote: 'I don't know who Paul McCartney is, but Kanye is going to give this man a career w/ this new song!!'

Daddy's girl: North, his daughter with Kim Kardashian, is the apple of Kanye's eye

Touching: Kanye wrote the lyrics from the perspective of his own mother who died several years ago

While most saw the funny side, some took the comments as genuine, and unforgivable, musical ignorance.

@Sky_Razball wrote: 'Only thing makes me mad about the stupid McCartney/Kanye tweets is these damn kids have google. Ain't no reason for your stupidity today.'

Only thing makes me mad about the stupid McCartney/Kanye tweets is these damn kids have google. Ain't no reason for your stupidity today. — Sky (@Sky_Razzball) January 3, 2015

People tweeting "unknown artist's career is gonna blow up" thanks to working with Kanye West. It's Paul McCartney. *screams internally* — Rae Johnston (@miss_raej) January 2, 2015

It is impossible to walk through this world and not know who Paul McCartney is. How even? — ThranduilDefensSquad (@Capt_ChrisPike) January 2, 2015

[Shakes my head at all these ignoramuses asking who this “new guy” on the new Kanye West track is (Paul McCartney)] — George (@th1nkdifferent) January 2, 2015

Losing hope in humanity by the minute. RT if you know who Paul McCartney is �� #TheBeatles pic.twitter.com/SJ3sDiPHwc — Ali Maadelat (@AliMaadelat) January 3, 2015

And @miss_raej said: 'People tweeting "unknown artist's career is gonna blow up" thanks to working with Kanye West. It's Paul McCartney. *screams internally*'

'The downfall of America’s youth has officially concluded with people not knowing who Paul McCartney is,' added @dukeofhoops.

Big star: But even Kanye's enormous success is eclipse by that of Sir Paul McCartney

Kanye has yet to comment on the remarks.

But for his part, the former Beatles front man took to Twitter on Friday and said: 'For any of you guys who were wondering what I was doing with @kanyewest...Here it is: kanyewest.com Happy rocking new year!"

In an interview with Billboard magazine, Ty Dolla $ign revealed he was also involved in the collaboration and there was more to come. A single featuring himself, Macca, Kanye and Rihanna is going to 'drop soon,' he said.

Odd couple: Macca and Yeezy worked together at the beginning of last year and came up with Only One