But Paul McCartney wants the world to know there's more to him than his formidable musical talent.
The 71-year-old was seen standing on his balcony in Warsaw, Poland flexing his arm muscles for photographers down below on Saturday.
The Beatles star had a playful look on his face as he playfully held his arms out, looking like he was straining a bit from the effort of flexing his biceps.
Paul - who turned 71 on June 18 - wore a simple blue T-shirt as he laughed and joked with photographers.
At one point he lifted his arms in front of him as if he were serenading the crowd as what appeared to be his wife Nancy Shevell took cellphone snaps next to him.
Paul played his first ever concert in Poland last night at Warsaw's National Stadium, according to his Twitter account.
He tweeted a Youtube video on Saturday showing 'Welcome Paul' written in lights.
'Each letter was over 80 metres high!' he said.